Showmax has just dropped the trailer for Rosemary's Hitlist, a Showmax Original true-crime documentary series about cop-turned-serial-killer Nomia Rosemary Ndlovu. Rosemary's Hitlist is produced by IdeaCandy, the company behind the SAFTA-winning true-crime sensation Devilsdorp, and directed by Valen'tino Mathibela (the first season of The Real Housewives of Durban, Lebo M…