Whodunnit?Season 61978 · 12 episodesEpisodes1All Part of the ServiceAn apparent suicide is not all that it seems...2Which Eye JackThere's dirty work at an inn on the Cornish coast.3Diamonds are Almost ForeverPriceless diamonds vanish from the safe at a police station.4Before Your Very EyesA murder takes place at the climax of a thrilling illusionist act.5A Bad SignA fortune teller is murdered but the solution is hardly crystal clear.6Adieu Monsieur ChipsA casino director's number has at last come up.7A Safe Way to DieWages are stolen from a safe -- next to which is lying a dead body!8Final TrumpetThe panel grapples with a case involving all the fun of the circus.9Instant CoffeeWho has poisoned the ruler of an oil-rich Arab country?10Date with Death (aka A Dead Cert)Murder strikes at a "school for lovers."11Underneath the ArchersMurder in a photographic studio keeps the panelists guessing.12Which Way Did He GoWhat killed Philip Cunning ham -- the cigar, the Scotch, or the cup of tea?Season 1Season 2Season 3Season 4Season 5