“The Kept Mistress Killer” (** out of four) was a thinly conceived suspense melodrama about a woman (Alicia Leigh Willis) who interviews and is hired immediately by the company’s CEO (Matthew Pohlkamp) and they fall in love but she soon starts to suspect he may be a duplicitous killer after his ex-wife is found dead and a hard-nosed detective (Kim Grant) begins to investigate. Glossy but generic thriller pretty much goes through the motions and none of the twists or turns should be too surprising to many. Even most of the actors seem like they’re simply going through the motions here.