|"The Crooning Crook Caper"|
|Season 3, Episode 10b|
|Original Airdate:||February 24, 2011|
|Vocabulary Words:||paper, detective, camouflage, pursu(e)(it), stakeout, footprint, monocle, criminal, notebook, handwriting|
"Patrol Dog Martha"
"Alice Covers Up"
Helen wishes she could be a kid detective just like her favorite book character, Curious Crystal. When Helen and Martha find a business card for "The Whistler" with "You've been warned" written on the back, they think their career as super sleuths has begun.