This quotation from dental records turns out to be quite all wrong when, while Land and Benson of Scotland Yard are investigating a theft in a combined dentists' offices, one partner is lethally administered a phenol injection by another instead of the regular anesthetic. From a kitful of oral practices to international oil dealings, to the probable identity of the intended victim, to fairly farcical happenings at a night club -- this imposes detectives' dubiety upon professional paraphernalia in sometimes fragmented fashion. Nice touches give it a send-off.