The Last Scoop by R. G. Belsky

Martin Barlow was Clare's first editor.  She's with a different station, he's suppose to be retired, but he tells her he's on a big case.  He wants to get together to talk about it, but she has her own work to do.  The next thing she hears is that he is dead...

Oceanview Publishing and Edelweiss let me read this book for review (thank you).  It will be published May 5th.

She goes to visit his daughter and express her condolences.  The son-in-law appears to be glad he's dead.  She asks to visit his room.  The granddaughter takes her up.  She asks if she may take is computer and some of papers.  She searches through the computer files.  One is password protected.  She sees he's been visiting serial killer sites.  He's found 20 so far.  She begins working for the FBI as well as doing her journalist work.

She eventually figures it out.  However he also knows she knows.  Will she survive?