Great energy created through well constructed juxtaposition gets this film revved up from the get-go. A car crash is followed by children nearly fist-fighting... then cross-cutting to sharks feeding. Castle uses some good depth of field on the ship creating a sense of transportation (restlessness is a key theme in the film). The staging/blocking is sound creating a sense for the relationships of the characters and their motivation. The direction is attuned for spectator identification and Castle's spooks have heightened effectiveness as a result. The dialogue has an honesty and naturalism reminiscent of Castle's The Americano. Then the titular uncle arrives and good acting all around keeps the film engaging and entertaining. The plot contrivances have to be overlooked simply for the fact that Let's Kill Uncle is a William Castle film! This is one of his better "screwball horror" films which followed his gimmick horror films.
Review of Let's Kill Uncle
