“Chrysalis” (** out of four) was a dour horror melodrama about two survivors (Sara Gorsky and Cole Simon) of a deadly infection that laid waste to humanity 25 years ago and they soon encounter one other survivor (Tanya Thai McBride) and try to ward off the remaining infected. Give writer Ben Kurstin and director John Klein credit for a more artistic approach to well-worn material but the results still feel like a washed-out retread of both “The Walking Dead” and “28 Days Later.” Interesting story elements of isolation are isolated by film’s grim tone and look.