“The Reef: Stalked” (* out of four) was a needless sequel to the 2010 original which I don’t think anyone was exactly screaming aloud for; after her sister’s murder, the original heroine (Terssa Liane) and two of her friends (Ann Truong and Saskia Archer) go on a kayaking adventure through the Pacific Island but find they are terrorized by (yawn) a killer shark. Even the shark looks bored but not as likely much as viewers will be by this tired snoozefest. Any one scene in “Jaws” has more teeth and bite than this timewaster.