Ep 5. The New York Underground!

In Scooby Doo! And Guess Who? season 2 episode 5, titled "The New York Underground!," the gang is invited to explore the underground tunnels beneath New York City by their friend, Terry, who is a student of architecture. Terry is convinced that one of the tunnels is hiding a secret treasure, and he wants the gang's help in finding it.

As they delve deep into the tunnels, the gang encounters a group of mysterious beings who seem to be protecting something hidden in the tunnels. The beings don't take kindly to the gang's presence and begin chasing them through the maze of tunnels.

Meanwhile, Velma discovers a clue that hints at the existence of an old speakeasy that might hold the key to finding the treasure Terry is after. The gang splits up, with Fred, Daphne, and Terry following Velma's lead to try and find the speakeasy.

At the same time, Scooby and Shaggy take a wrong turn and find themselves lost in the tunnels. They stumble upon a secret underground laboratory, where they meet a scientist who is conducting experiments on a mysterious creature.

As the gang navigates the dark and dangerous tunnels, they must work together to solve the mystery of the treasure, uncover the truth behind the secret underground laboratory, and save themselves from the clutches of the mysterious beings who are hot on their trail.

With plenty of action, suspense, and humor, "The New York Underground!" is a thrilling episode of Scooby Doo! And Guess Who? that is sure to delight both old and new fans of the iconic mystery-solving gang.