Killer Shark was another of actor Roddy McDowall's self-produced film efforts for Monogram release. McDowall stars as Ted, the son of fisherman White (Roland Winters). Convinced that his college-bred son is too namby-pamby for the demands of his profession, White nonetheless allows Ted to accompany him on a dangerous shark-netting expedition. Proving an ineffectual seaman, the boy accidentally causes one of the crew to suffer a serious injury. Hoping to prove himself, Ted signs on with another fishing boat--only to fail again (McDowall didn't seem to be too concerned about projecting himself as a hero on-screen). Finally, Ted comes through by capturing a gang of shark thieves. Fans of director Oscar "Budd" Boetticher tend to write off Killer Shark as a training exercise.
~ Hal Erickson, All Movie Guide