SOLVED!: Mystery Thriller Book with Modern Sherlock Holmes type detective [s]

[Wrathbane]

The story surrounded the discovery of skeletons of children I believe in a brownstone basement...I think. The premise was a villain was extending his life by extracting something from the children and had been alive longer than usual. The detective was included in another novel I think.

[Dawn]

The Cabinet of Curiosities

Special Agent Pendergast

[Wrathbane]

Dawn wrote: "The Cabinet of Curiosities

Special Agent Pendergast"

Dawn!!! You are my Hero!