Season 5

It's 1925, and a daring thief makes off with a precious gemstone.

Rehearsals for a murder mystery play turn sinister when one of the actors is poisoned for real.

Seventieth birthday celebrations for a bad-tempered Chairman of the Board end with a bang!

A top British scientist is gunned down as he works in his laboratory.

It's the finals of the Banworth Chemical Works dance competition and there's murder on the dancefloor.