Replying...
Intro. Mistery inc. is try to solve a haunted house mystery. Velma and Daphne got separated from Fred, Shaggy and Scooby Doo. Scooby Doo suddenly got separated too when he take a wrong turn and accidentally going towards where Daphne and Velma being tied up back to back on chairs allegedly by the ghost of the house.

Daphne and Velma

@Oren