A woman who had a child with the man dubbed the worst serial killer in the world after marrying the man in his 60s when she was just 23 has said she didn't care about his crimes.
Sergey Tkach is believed to have murdered over 100 women between 1984 and 2005 , using his power as a police officer to cover his awful crimes in which he would rape and suffocate people, before sexually abusing their dead bodies.
Victims of the grim killer were as young as eight-years-old as Tkach would kill people near railway lines recently treated with tar to throw police dogs off his scent.
