“The Beach House” (** out of four) was a sputtering horror thriller about two young lovebirds (Noah Le Gros and Liana Liberato) who go on a romantic getaway to a beachfront property when a mysterious infection sets in and affects all of them and they realize that they have to get out before they are all killed one-by-one. Film takes a long while to get going and offers some creepy scares once it does but then lags once again and never sufficiently rises and congeals to a solid whole. Director Jeffrey A. Brown shows some promise but is hamstrung by rote material.