A Clean Murder — Gillian Larkin

A short mystery story

Linus Watkins has been cleaning Ray's windows for years. As did Linus' father before him. So when Linus suffers an accident and is out of action, Ray doesn't hesitate to help him.
With his best friend, Cain, at his side, Ray sets out on Linus' cleaning round.
All too soon, they discover Linus' accident wasn't an accident. Someone had tried to kill him.
Ray and Cain decide to make investigations into the incident and find many suspects. Their investigations take a turn, and they find themselves uncovering a disturbing secret.