Clergyman Canon Ambrose Pennefather (Chris Traill making a welcome return to Detour's stage) finds himself trying to solve the dastardly crimes - although even he may have a motive for murder.
There are, of course, plenty of other suspects.
There's Simon Mostyn (Jaden Mcleod) for starters. Penniless until his recent marriage to Kay, could he have bumped his new wife off for her money?
How about Jacqueline de Severac (Alex Gilmour), Simon's jilted ex-fiancee, who has been jealously stalking the couple on their honeymoon and joins the cruise at the last minute?
"It's the kind of evening when things snap," she declares ominously as the tension builds.
Or William Smith (Ryan Wood), the outspoken socialist, who resents the wealthy in general for exploiting the workers; the mysterious foreigner Dr Bessner (Sam Harris); and Louise (Sophia Meichtry), Kay's maid, who could have her own reasons for wanting her employer dead.
Could it even be the irascible Helen ffoliot-ffoulkes (Dianna Corrigan) or her oh-so-innocent niece Christina Grant (Sarah Coleman)?
Director Kim Williamson has turned in a slick production which oozes with atmosphere, right down to the pesky trinket sellers (Daniel McKenna and Jordan Proctor Burkett) adding to the exotic flavour.
Murder on the Nile will keep audiences guessing until July 1 and offers the perfect night out to dispel the winter gloom.
Reviewed by Paul Chapman