Colin discovers an unexploded missile in the basement and tries to warn Gordon but he takes no notice and tells him to sort out his problems on his own. While doing this on his own Gordon is packing his things away for his departure for Brussels. Then Colin gets hit on the head by a croquet ball by Gavin and Tim and Colin ends up being rushed to hospital. Then no one knows but Colin had put the missile in the racket box and tries to warn everyone but everyone is having a party for their new futures. (thetvdb.com)