Footprints in the Ferns, livre audio

Book 6: Lovely Lethal Gardens
Riches to rags. ... Controlling to chaos. ... But murder ... not this time!
One night 10 years ago, 8-year-old Crystal, vanished from her bed in her parents’ house, the only clue a footprint in the flowerbed below the girl’s window.
Now that footprint’s reappeared, this time at the scene of another crime, and Doreen is under strict orders not to stick her nose into Corporal Mack Moreau’s new investigation.
But while Mack is busy with the new case, Doreen figures it can’t hurt if she just takes a quick look at the old one. Her house is empty, her antiques removed, and she has time on her hands. She’s finished working on Penny’s garden and needs a new project to keep her busy – and allow her to avoid the heavy work waiting in her own garden. And with the help of her assistants, Thaddeus the parrot, Goliath the Maine Coon, and Mugs the Basset, soon Doreen is busy navigating the world of pawn shops and blackmail as she looks for clues as to what happened to the girl stolen from her bedroom so many years ago.
Surely, it’s not her fault when her case butts up against the new one – is it?