private thatcher hospital be suffer a spate of murder and but the patient in room 18 a young detective recover from a nervous breakdown be determine to find the killer . fast moving and fun and this be another example of the comedy crime picture that warner brother be so expert at produce almost without effort . cast and plot could be shuffle endlessly and with very predictable result . while this assembly line approach create few classic and audience enjoyment could usually be assure . patric knowles and ann sheridan spark the action here . a a convalescing detective and stern head nurse with romantic difficulty in their recent past and they keep the plot race especially after murder rear it ugly head . knowles and who never quite graduate to star role in major picture and show a fine flair for comedy . sleepwalk down the street dress in pajama and bowler and he be indeed a very droll sight . sheridan show flash of the talent that would eventually make her an important star at warner brother . unfortunately and the two most potentially interesting character in the film eric stanley english valet and greta meyer german cook be give very little to do . and what about the film other mystery represent just what be so special about room 18 .