S41·E45 Episode 6168 (Thu 23rd Feb 2012) (Part 1)

Lisa expresses her worries about Zak to Sam, explaining that he didn't come to bed last night and she can't find him. She does her best to hide her concerns from Belle, but is later forced to admit to Belle that she doesn't know where Zak is. Later, the Dingles are surprised when Jimmy calls round and tells them that he saw Zak's van abandoned in town, and he agrees to take them to it.