Lawyers for a man accused of killing his wife during a cruise ship vacation argue in new court papers that it was not premeditated murder. Kenneth Manzanares is accused of killing his wife, Kristy, aboard the “Emerald Princess” last year. Nancy Grace looks at the case with Southern California prosecutor Wendy Patrick, Los Angeles defense lawyer Troy Slaten, Private investigator Vincent Hill, and Crime Stories contributing reporter Chuck Roberts.

Also read: Cruise ship murder update: Judge sets trial date for man indicted in wife’s killing

Next, Nancy is joined by psychologist Dr. Pat Saunders, forensics expert Joseph Scott Morgan, and Crime Stories investigative reporter John Lemley to dig into the murder charges against a man who allegedly drive his car into a restaurant to kill his daughter and daughter in law.

Also read: Man drives SUV into restaurant killing his daughter and daughter-in-law weeks after begging son to take away his guns due to overwhelming depression, anxiety issues

Finally, Grace discusses the new synthetic drug — K2 — that can turn users into zombies and worse. She consults addiction expert Dr. William Morrone, author of American Narcan — a passionate call to arms against a death storm sweeping across the Americas.

Also read: Woman says synthetic marijuana caused ex-husband to kill their five kids

“Crime Stories with Nancy Grace” is a national radio show, heard on SiriusXM’s Triumph Channel 132, five times a day. You can also subscribe and download the daily podcasts at iTunes and Google Play.

[Feature Photo: Kristy and Kenneth Manzanares/Handout]