An international manhunt is underway for the suspected killer of professional cyclist Moriah “Mo” Wilson.  Authorities say 34-year-old yoga teacher, Kaitlyn Armstrong, shot and killed 25-year-old Wilson in a jealous fit of rage, allegedly for having an affair with Armstrong's boyfriend, Colin Strickland, who is also a top-rated professional cyclist. 

On the night she was killed, Wilson was in Austin, Texas preparing for a race. 

Police say she went on a date with Strickland, first swimming with him at a popular pool and then having dinner together.  After the date, Wilson returned to the house where she was staying.  Minutes later, she was shot dead. Police say Armstrong knew about the date because she'd been stalking Wilson. Ring camera video shows the suspect's car outside the house around the time of the murder. 

Strickland says he's cooperating in the search for Armstrong.  Armstrong's family says she is innocent.

Joining Nancy Grace Today:

•  Rania Mankarious - CEO, Crime Stoppers of Houston, Author: "The Online World, What You Think You Know and What You Don’t: 4 Critical Tools for Navigating the Digital Age", Crime-Stoppers.org, RaniaMankarious.com, Instagram/Twitter: @TheRaniaReport
• James Shelnutt - 27 years Atlanta Metro Area Major Case Detective, Former S.W.A.T. officer, Attorney (Gadsden, AL), The Shelnutt Law Firm, P.C., ShelnuttLawFirm.com, Twitter: @ShelnuttLawFirm
• Dr. Shari Schwartz - Forensic Psychologist specializing in Capital Mitigation and Victim Advocacy (Miami Beach, FL), Panthermitigation.com, Twitter: @TrialDoc, Author: "Criminal Behavior" and "Where Law and Psychology Intersect: Issues in Legal Psychology"
• Irv Brandt - Former US Marshals Service International Investigations Branch, Author: "FLYING SOLO: Top of the World" available on Amazon IrvBrandt.com, Twitter: @JackSoloAuthor
• Joe Scott Morgan - Professor of Forensics: Jacksonville State University, Author
• Stephanie Pagones - Crime Reporter, FOX News Digital, Twitter: @steph_pagones