Thomas was an excellent guide. An actual historian instead of a showman, he was extremely knowledgeable and was able to provide an alternate perspective of Salem's history. No ghost stories here! Despite being so factual, he is absolutely not boring, and the guests on his tour were continually cracking up at his jokes and quips. Totally down to earth, and a wonderful guide.
Tour stops included the site of the torture chamber, the actual location where the trials were held, historical cemeteries, the witch house, the "best" museum, the memorial to the victims of the trials, the site of some Hocus Pocus filming, and the statue of Hawthorne. Definitely wear good walking shoes, as you'll be on cobblestones in the dark quite a bit.
Thomas is also a member of The Satanic Temple, and can answer questions about the religion, or point you towards their art gallery. You get reduced admission to the gallery if you take his tour, and the gallery includes both modern artists and classics such as Degas and Dali. Definitely worth a visit.
Overall, there's a reason this is the #1 tour of Salem!