there was quite a vogue for this a few years ago. Dr Paul Britton was always popping up on the telly & he wrote several bestsellers about his work. Then it all went horribly wrong with the tragic cases linked to Rachel Nickell.
They've had some pretty mixed success certainly - arguably the cases where it was implemented successfully such as John Duffy, was mainly common sense. Apparently a study in 2002 found that chemistry students produced a more accurate profile on a solved murder case than experienced senior detectives! Do you know much about investigative psychology specifically?