A worried mother (Grace Albertson) contacts detectives Friday (Jack Webb) and Smith (Ben Alexander) after she finds a hypodermic needle in her teenage son's room. Although the boy sullenly admits that he's shot heroin at least twice in the past few days, he stubbornly refuses to reveal the name of his supplier. The trail of evidence leads to the LA waterfront, where Friday and Smith go undercover as merchant seamen to nab the drug smugglers. ~ Hal Erickson, Rovi