In An Instant (2015)

S4E11 Kleptomaniac Pebbles

While shopping for a birthday present for Wilma at a jewelry store, Fred and Pebbles inadvertently cross paths with the notorious jewel thief, Baffles Gravel. He secretly places a stolen diamond bracelet in Pebbles' possession. When Fred and Wilma realize they have the stolen item, they scramble to return it to the store before anyone catches on to Pebbles’ unexpected “crime.”