&quot;Ka Luhi&quot; -- Five-0 investigates the 10-year-old cold case of a missing teen when a boy suffering from PTSD undergoes hypnosis and realizes he may have witnessed her murder. Also, Danny's sister, Bridget (guest star Missy Peregrym), visits Oahu for a business conference, and he suspects that she may be getting too close to a co-worker, on HAWAII FIVE-0, Friday, Dec. 9 (9:00-10:00 PM, ET/PT), on the CBS Television Network. Pictured left to right: Alex O'Loughlin as Steve McGarrett, Scott Caan as Danny &quot;Danno&quot; Williams and Missy Peregrym as Bridget. Photo: Norman Shapiro/CBSÃÂ©2016 CBS Broadcasting, Inc. All Rights Reserved (&quot;Ka Luhi&quot; is Hawaiian for &quot;The Burden&quot;)