SpongeBob SquarePants and Patrick Star are back for a new middle-grade
mystery filled with ghosts, superheroes, and Bikini Bottom's most
dangerous creatures!
SpongeBob SquarePants is back with a new mysterious case to solve in the
second book of this exciting middle-grade series! When a glowing green
trail appears outside of the Shady Shoals Rest Home, retired superheroes
Mermaid Man and Barnacle Boy ask SpongeBob and Patrick to take on the
case and figure out what the trail is. Unfortunately for the two
detectives, they are lead through ship graveyards, underground tunnels,
and ultimately in the nest of some of the most dangerous villains Bikini
Bottom has ever been faced with!