An early effort from director Oscar "Budd" Boetticher, Assigned to Danger was a worthwhile showcase for Gene Raymond, who'd been absent from the screen for several years. Raymond plays insurance investigator Dan Sullivan, at present trying to gather clues from a payroll heist. Someone doesn't want Sullivan to solve the case, as witness the number of times he's beaten black-and-blue. The film's bizarre climax takes place at the hideout of gang boss Frankie Mantell (Robert Bice), where Sullivan, posing as a doctor, is expected to operate on the wounded criminal! Director Boetticher is at his best in the closing reels, slowly and methodically building tension upon tension as Sullivan seeks an avenue of escape.
~ Hal Erickson, All Movie Guide