Greg Coughlin

The victim-biting serial killer Colville appears to be up to mischief again and to have murdered two women. However, Colville is already dead. Sherlock and Watson are puzzled and question Watson's colleague Dr. Fleming.

Nora takes care of some unfinished business before heading to New York for a conference. When she gets there, she discovers that someone is impersonating her and tracks down her imposter.