They got back to the station in plenty of time for their train.
"Did you see that man I bumped into on the Underground?" Chas asked Nics.
"No, why?"
"Well, it was the oddest thing," he said. "But after I bumped into him it looked like he just kept on walking. And he walked straight into a wall, and kept on walking for a few steps, only he didn't get anywhere, because he was flat against the wall. He looked like one of those wind up toys that's got stuck."
"He wasn't though - was he?" Nics asked.
"Nope, 'cause he turned away from the wall after the steps or two he took into it weren't getting him anywhere. And he was back on track again. The damndest thing was, I bumped into him and apologised, but it was like he hadn't even noticed. Most people would at least give you a dirty look, but nothing from him."
They had reached the big notice-board that gave the details of the train times, destinations and platforms.
"That's odd," said Nics. "All the ds are gone from the words."
And sure enough, Hereford was spelled Herefor, London, Lonon and so on.
"Computer glitch," said Chas airily. "Might be a new type of virus."
"That only attacks railway electronic notice boards," said Nics, in a disbelieving tone of voice.
Chas shrugged.
"Hey, it could happen."
"Platform 2B again," said Nics. "Better go try to find it sooner rather than later."
It took them a while of wandering, and trying to remember where they'd come from before they found themselves in front of the wall on which the sign for platform 2B hung. Chas, ever the opportunist, had swiped an abandoned paper on the way.
"I know what to do," said Chas. "I've read Harry Potter."
And taking a few steps back he ran headlong at the wall.
Only to bounce off the very solid brickwork to land flat on his backside.
"Ouch," he said.
"You alright?"
He nodded, rubbing his forehead where it had bashed the wall.
"Silly sod," said Nics, half worried, half affectionate.
A line of ducks came waddling past them, the one in the front wearing a train engineer's cap. Calmly they walked up to the wall, did a smart left turn, then a smart right turn and disappeared around a corner that neither of the humans had spotted before.
Nics could have sworn that the last one in line looked her directly in the eye and winked at her.
"They look like they know where they're going," she said to Chas, who was in the process of dusting himself off.
And so they followed the ducks' example, walking up to the wall, turning smart left, then smart right. Lo and behold, there they were on platform 2B.
Their train home was pulled by another steam engine, but this one was painted a jolly post box red. The engine that had brought them to London had been a nice shade of bottle green.
"I wonder what the buffet car entertainment will be on this one..." mused Chas.
A man in a very old-fashioned conductor's uniform with peaked cap was checking everyone's ticket before he let them onto the train. He was doing this very slowly and meticulously, so quite a queue had built up.
The duck with the engineer's cap was sitting in the engine window, watching the crowd.
"Hey," said Chas. "That's Spud! Hey! Spud!"
Spud turned around and saw them, and his hand went straight to his upper lip, where a very fake moustache was clinging on by one end. His mouth widened in a gasp of pain as he quickly removed the not very convincing disguise, which he tried to cover by grinning widely and waving.
He'd forgotten that the fake moustache was in the hand he was waving.
"Meet you on the train!" yelled Chas as he and Nics joined the end of the queue.
They found Spud in a carriage that had compartments, rather than the more usual airplane style rows of seats. The compartment had big old fashioned comfortable leather benches, with buttons on them like overstuffed armchairs. He was the only one in there, besides a model of the Big Ben clock tower that looked like it was made out of Easter egg foil.
Nics and Chas joined him.
"So," said Spud looking at the cast on Chas' arm. "Guess it was broken after all."
"Yeah, but the frozen peas helped," said Chas. "I'm stuck in plaster for a few weeks. And the itch is driving me mental. Still though, get time off work for it.
"Didn't know you were in London," he continued.
"Visiting my grandmother..." mumbled Spud.
"What on earth have you got there?" asked Nics, waving one hand towards the clock tower.
"Scale model of Big Ben made out of chocolate," mumbled Spud, even more indistinctly.
"Why?" she asked, totally uncomprehending.
"Long story..." he said, trailing off in the desperate hope she wouldn't ask.
Chas, sensing Spud's discomfort, distracted Nics by pointing to a news story in the paper.
"See?" he said. "New virus strikes huge numbers of computer systems all over the world. That's what caused the missing ‘d’s."
"Give me that," she said, grabbing the paper and reading a bit further into the article.
"It says here that it doesn't do anything like that - it emails images of scanned in squashed bananas to people, who then get infected and forward it on to everybody else. What sort of sick and twisted person would start off such a thing?"
"I didn't mean to!" said Spud quickly. "I just hit the reply all button by accident... oops."
He subsided into and embarrassed silence as Nics stared at him again. Abruptly, she sneezed.
The silence was broken by a loud whistle and the train jerked as it started to move away from the platform. It took a good while to get up to speed, and then it would slow down again with a jerk, only to speed up again with another jerk.
Nics gave up trying to read the paper after one of the jerks threw her across the compartment and landed her with one elbow in Spud's chocolate Big Ben.
"Oh, I am sorry!" she said, eyeing the rather large smashed in hole in the side of the model.
"It's alright," said Spud magnanimously. "I was just going to offer people some chocolate anyway."
"They must be having engine trouble," said Chas, as all three were thrown about with yet another jerk. "Tell you what, I'm going to go try and find out what's going on."
"Good luck," Nics wished him wryly. "Try not to break the other arm."
"Very funny," Chas said as he careered around the compartment and bounced out the door.
He was back in about five minutes.
"There's a staging of Hamlet happening in the buffet car," he said. "And the train is acting so oddly because of, and I quote 'the wrong sort of trees on the line'"
With his good hand he wiggled his fingers to indicate the quote marks, and then slumped into the seat next to Nics. He ran the back of his good hand along the bottom of his nose, and sniffed loudly.
"Oh, for God's sake, use a hanky!" snapped Nics. It was one of his bad habits that really wound her up. She dug through her bag looking for one, taking the brown paper parcel out and putting it on the seat next to her.
Another violent jerk sent the parcel flying off the edge of the seat, with one of the loops in the bow that was tied around it catching on one of the seat buttons. Neat as you'd like the string came undone, spilling the contents out onto the carpeted floor of the compartment.
Nics made an abortive grab for the parcel, ending up with a handful of paper and the mother-of-pearl oval. Chas swore, and dived for the other pieces before they could do anything stupid like get lost underneath the seats, or down a crack in the floor. The empty locket half came to a stop in the middle of the floor, the new amulet that the silversmith had given Nics alongside it. The half of the locket with the photo in it ended up trapped firmly between the wall and Spud's foot.
Spud leaned over to pick it up casually. He was about to hand it to Chas without a second thought, but he happened to glance down that the picture.
All the blood drained out of his face and he looked like he'd been pole axed.
"Where did you get this?" he asked, his voice shaking.
"I found it, on the beach," replied Chas, the other half and the amulet clasped firmly in his hand.
"On the beach?" asked Spud. "You're sure?"
"Of course I am," said Chas. "Look, can I have it back now?"
Spud handed it over, his hands visibly shaking.
"Spud?" said Nics gently. "Spud?"
He looked over at her and she continued.
"Are you alright? You look like you've seen a ghost."
"No, not a ghost," he croaked, mouth dry. "I'm just trying to figure out how a picture of my grandmother ended up washing onto the beach, that's all."
The train jerked again, and came to a complete stop.
"Your grandmother?!" said Nics incredulously. "How on Earth?!"
"Dunno," Spud said. He was looking a bit less grey now, but no less shook up.
"Well, could we ring her up and ask her about it?" asked Nics, ever practical.
"Um, no," he said, looking embarrassed again. "Thing is, when I said I was visiting my grandmother... I lied. My grandmother disappeared thirty five years ago, after a freak accident involving a rain of fish."
"So, what were you doing in London then?" said Chas, handing the locket pieces plus the amulet to Nics. She wrapped them up carefully in the brown paper, all but the amulet, and put the parcel back in her bag. The amulet she put on the silver chain that she wore around her neck, and tucked it safely inside her shirt.
"Um, I can't tell you," said Spud. "Sorry."
"Oh-Kay," sighed Chas.
There was an uncomfortable silence again.
"Can you at least tell us her name?" asked Nics.
Spud brightened visibly on being asked a question that he could answer, and might stop his friends from being mad at him.
"Sure!" he said.
There was another pause, and Nics prompted him:
"Her name?"
"Oh, sorry, April, April Upton-Baxter. Very old family that."
Chas and Nics looked at each other.
"The banana!" she said.
"The sand at the beach!" he said.
Spud leaned towards them, looking like he was going to let them both in on a big secret.
"Very posh. My side of the family's a bit of a black sheep... but they did a lot, during the war and stuff."
Down the other end of the carriage, a door could be heard swinging open.
"Rumours have it," said Spud, "that Grandmother was working for the government, doing something very important indeed. Something that might even have been of grave importance to national security."
He sat back smugly, waiting for the looks of awe from his friends. Neither of them looked particularly impressed.
The door to the compartment swung open, and a pizza deliveryman stuck his head around it.
"Pizza?" he asked. "Anyone here order pizza?"
Chas and Nics just stared at Spud.
"What sort?" he asked the pizza guy.
"That'd be a medium, extra garlic, mushroom and banana pizza."
Nics made a face at Chas, who nodded in shared disgust.
"That'd be mine then," said Spud, and was handed the pizza.
"Five fifty please mate," said the pizza deliveryman. Spud dug into his pockets and looked at the money he pulled out. He then turned to look beseechingly at the two opposite him.
Chas relented. "Oh, alright, here," and handed him a few extra coins. "But don't expect me to eat any of the damn stuff."
Paid, the pizza guy wandered off down the length of the carriage again. With a lurch, the train started to move, and this time it was the pizza that slid off the seat to land face down on the carpet. The box sprang open, sending a heavy waft of garlic through the air.
"Probably the best thing for it," muttered Nics to herself. Not quietly enough though, because Chas nodded vigorously in agreement.
Spud picked the pizza off the floor, and dusted it off before taking a big bite out of one slice, with every sign of enjoyment. Nics shuddered.
"Excuse me for a minute," she said. "The shaking's making me feel a bit sick." And she fled out of the door off to the toilet.
Chas looked after her like he wanted to follow, but instead restrained himself and just opened a window. Spud kept doggedly eating pizza.
"Why are you so obsessed with banana on pizza anyway?" Chas asked him.
Spud shrugged. "I just like banana. And pizza."