The Hotel Excelsior is an English resort hotel in The Witches. Luke accompanies his grandmother to the seaside hotel, where she is taking a doctor-prescribed holiday. Their arrival is overshadowed by the presence of Miss Eva Ernst and members of the Society for the Prevention of Cruelty to Children for their fifth annual convention. Unbeknownst to the toadying owner/manager, Mr. Stringer, the conventioneers are actually a coven of witches from around the world.