“Unstable” (*1/2 out of four) was an unnecessary thriller about a divorced mom (Ashley Scott) who takes in a former football player (Ivan Sergei) as a caretaker for her child but never realizes that he is (what else?) a psychopath who wants the child for himself and soon turns both of their lives upside down. Thoroughly obvious movie filled with logic gaps and red herrings; Sergei is such an obvious nutjob creep that this is actually unintentionally funny for a little while but unfortunately this isn’t meant as a comedy. Filmed in 2012 and released now but has not aged like fine wine.