The three detectives are his young friends Bob Andrews, Pete Crenshaw and Jupiter Jones. They live in a town near Hollywood. Their stronghold is a salvage warehouse, their headquarters is an old caravan in which they have equipped a crime laboratory. Their agency "Three Detectives" reveals any secrets, riddles and puzzles. Friends-detectives boldly take on the most important and complicated cases and bring them to the end with honor.

Three detectives and a ghost in a hotel Strange things happen in the hotel of a former Hollywood actress, the eccentric Amanda Black. Suddenly, various things disappear, which then appear in strange places - a painting is found in a park in the pouring rain, and a wall clock is found in a swimming pool. Amanda is on the verge of a nervous breakdown. She invites three detectives to shed light on the cause of events and find the culprit. The detectives immediately got down to business and began to have strange suspicions. Isn't the owner herself responsible for what happens in the hotel? Or should we look for another suspect?