Dr. David Trent is one of the main villains in the original House on Haunted Hill directed by William Castle.

He is a pscychitrist, one of the guests in the haunted house party of eccentric millionaire, Frederick Loren, and the secret lover of Loren's fourth wife, Annabelle. He and Annabelle planned to have Frederick throw a party at the House on Haunted Hill, so they can kill him and have his money, but they failed and ended up in a vlad of acid.