Too Many Questions by Leslie Grant-Adamson

Private investigator Laura Flynn is not sure who her nasty caller is. Possibly the same person whose anonymous threats have already sent her client, beautiful fashion designer Kate Mullery, scurrying into hiding. Or someone trying to scare Laura off her investigation into one of Mullery's business connections. And yet another possibility is that someone has been made uneasy by Laura's persistent inquiries into the long-ago disappearance of her father.

Anonymous threats don't faze Laura, but Kate Mullery's murdered body floating in the River Thames does. It's even a comfort to have her ex-husband suddenly reappear in her life. Gutsy Laura, her offbeat London, and her oddball cronies make a real world - vivid, amusing and more than slightly sinister. For the menace that drifts through it like fog is very menacing indeed - and entirely too real... 

An enjoyable cozy. Moves along quickly with a satisfying ending.