Case files include:
Secret of the Skull
What looks like a credit card scam opens the way to a whole new, and scary, blast from the past . . .
Diamonds Are For Heather
An anonymous text for means confronting a thief stealing from diamond smugglers – and worse, a girlie sleepover.
The Guy Who Came In From The Cold
Detective work is always challenging, but try doing it with a cold, from your bed! Muddy and Izzy help find Miss Penzler's missing book. . .