What was H. H. Holmes arrested for the second time that led to discovering the bodies in his castle?

Well, he bought a drugstore off of Mrs. Holton then she mysteriously disappeared and he said she moved away to California. He changed the construction workers of his hotel so only he knew the full design of it then killed many people with different ways in different rooms and crafted the bones of the dead into skeleton molds then sold then sold them to medical schools, along with organs. He was arrested and created a plan to fake his death in order to get money from people but instead made his associate do it, Holmes went on trail and evidence showed that chloroform was used after his associates death. He got custody of 3 out of 5 of his associates kids then moved into a cottage where someone said they saw him go to a drug store to buy the dru.gs used to kill his associates son and went to the repair shop for his knives. The police found bits of bones and the boys teeth in the chimney, he was arrested after being tracked down. Holmes never let his custodian clean certain floors of his castle so investigators searched it and found out everything. He murd.ered up to 200 people, it’s estimated between 20 to 100 people.