“First Kill” (*** out of four) was a first-rate thriller about a dedicated father (Hayden Christensen) who takes his son out for a day in the woods when they witness a murder over stolen money; the murderer (Gethin Anthony) then kidnaps his son and offers him in exchange for the return of the money so he turns to the corrupt local sheriff (Bruce Willis) but finds he can trust no one as he tries to save his son’s life and stay alive himself. Tense story has some expected logic gaps but is anchored by Christensen’s terrific performance. Willis is good also in an unusual villain role.