When Mrs Thompson said goodbye to her handyman, she knew he’d come back the next day.

And he did. But she was lying in a pool of her own blood, dead on the kitchen floor.

Or at least, that’s what he told the police.

Could Jo Millington's bloodstain pattern analysis help piece together Margaret's final moments?

This episode includes references to death, violence and dissection, which some listeners may find distressing. Our victim is fictional, but the science and the scientists are very real.

A Whistledown production for BBC Sounds.

Presenter: Carla Valentine

George the Pathologist: Matt Addis

The Voice: Jude Akuwudike

Producer: Kate Holland

Co-Producer and Sound Designer: Steve Bond

Executive Producer: Deborah Dudgeon

Writer: Nina Millns

Script Editor: David K. Barnes

Original Music: Aaron May

Vocals: Alyssa

Production Team: Nina Kruse, Mend Mariwany