AllMovie

Having long enjoyed a near-legendary status because of its general unavailability, Dangerous Nan McGrew inevitably disappoints when seen today. In her only starring feature role, Helen Kane, the original "Boop-boop-a-doop" girl, stars as an entertainer in a travelling medicine show. While her boss Doc Foster (Victor Moore) peddles his snake oil and picks as many pockets as possible, Nan shows off her skills as a singer and sharpshooter. Through a series of improbable plot twists, Doc's little show becomes a rendezvous for bank robber Muldoon (Frank Morgan), RCMP officer Bob Dawes (James Hall), and all-around dufus Eustace Macy (Stu Erwin). The comedy sequences are strictly from hunger, and the songs aren't much better, but Helen Kane's sheer likability -- and the combined comic expertise of Victor Moore (in his first talkie) and Frank Morgan -- save the film from being a complete waste of time.