Killer Dreams by Iris Johansen

Two years ago, Dr. Sophie Dunston’s life was shattered. Today, she’s a sleep therapist at a hospital in Baltimore. And…she wants to kill Sanborne, the control freak founder of the pharmaceutical company where she used to work. He has sinister uses for the REM-4 that she had developed as a cure for people with night terrors. When Sanborne sees her on a security tape, he decides she must go. Enter Jock, Royd, MacDuff and the whole gang to protect her and her son and to put a permanent end to Sanborne and his partner.

As other reviewers have noted, this is kind of the same old story with new names and a few characters and locations from previous stories.