The Search - S1.E2

Patrick is given the task of finding a missing object that has been lost on his side of the time barrier. Armed with only a clue and a beeper brooch (that beeps if he is near the object), he is sent back to his own world. He searches the zoo and the shopping centre where the brooch goes off at a gift shop. There are a few twists and turns until Patrick finally crosses the time barrier again with his "find".