Phoebe Allen as Karen

Karen Hewitt is a main character, portrayed by Phoebe Allen, in the first four series of the Original Series and is arguably Bernard's best friend. She is the same age as Bernard, lives in the house next door but one and is in the same class at the same school. She first finds out about The Watch in Plenty of Time when Bernard accidentally leaves the watch at school when it slips out of a broken pocket. From then on she borrows the watch in many episodes which are often centred on her instead of Bernard. Bernard being late to her party in the first episode is one of the reasons that the Postman give him the watch in the first place. Karen has problems writing stories until she starts borrowing the watch.