Holmes is visited by a perturbed proper eng gentleman, John Scott Eccles, who wishes to discuss something “grotesque”.

No sooner has he arrived at 221B Baker Street than Inspector Gregson also shows up, along with Inspector Baynes of the Surrey Constabulary. They wish a statement from Eccles about the murder near Esher last night. A note in the dead man’s pocket indicates that Eccles said that he would be at the victim’s house that night.

Eccles is shocked to hear of Aloysius Garcia’s beating death.

Yes, he spent the night at Wisteria Lodge, Garcia’s rented house, but when he woke up in the morning, he found that Garcia and his servants had all disappeared. He was alone in an empty house. He last remembers seeing Garcia at about one o’clock in the morning when he came to Eccles’s room to ask if he had rung…(Excerpt from Wikipedia)