“Killer Ambition” (*1/2 out of four) was a killer mistake about a successful jewelry store owner (Tahnee Harrison) who joins a secret female organization for successful business women but soon strange and sinister occurrences start happening. Glossy cinematography and lighting can’t disguise a muddled storyline that gets more ridiculous by the minute. Sean Kanan shows up in a key role as her vindictive ex but he should have karate-chopped this script and focused on “Cobra Kai” instead.