“Assailant” (** out of four) was a subpar suspense thriller about a married couple (Chad Michael Collins and Poppy Delevigne) who vacation to the Carribean in an attempt to salvage their marriage and encounter a drifter (Casper Van Diem) who turns out to be a severely dangerous sociopath who turns against them and hunts them down and they realize they have to stay together to defeat him and survive. Tired potboiler goes in all the familiar and predictable directions you expect although this is an image-altering role for Van Diem who is solid as the villain. Easy to watch but just as simply easy to forget by the end.