Elementary (2012)

S1E3 Child Predator

Sherlock and Watson delve into a troubling child abduction case linked to a serial killer known as "The Balloon Man." This eerie figure is notorious for leaving behind a distinctive group of balloons at every crime scene, which serves as his chilling signature. As they investigate, the pair must unravel the clues left behind to catch this elusive predator before more innocent lives are at stake.