When Gary travels the wrong way from the 1940s he finds himself in Victorian London, where Jack the Ripper is on the loose, and discovers the prolific murderer has been using the backyard of his shop to hide from the police.

In 1945, Gary and Phoebe join a concert party in Belgium to entertain the troops, but a sudden a sudden advance by the Germans leaves them stranded behind the lines. Meanwhile, in 1999, Gary thinks Yvonne might be having an affair and recruits Ron to spy on her while he's away.