Holmes and Watson find themselves as dinner guests but are soon incarcerated. During the dinner a member of royalty is murdered (poisoned). The implications of his death are far reaching, including the possibility of a war. The king is being manipulated by one of his own people and Holmes and Watson are forced to overcome their imprisonment to prove the innocence of the man who put them in prison. It uses the old Hamlet poisoned sword bit. There is a comical scene with Holmes and Watson fencing in order to distract the guards. Both guards are done in through their own stupidity and find themselves hogtied. It's a rather tame episode.