--- - |2 Homicidally bereaved individuals may experience symptoms of Complicated Grief (CG) and Posttraumatic Stress Disorder (PTSD). This Randomized Controlled Trial examined the effectiveness of an 8‐session treatment encompassing Cognitive Behavioural Therapy (CBT) and Eye Movement Desensitization and Reprocessing (EMDR) to reduce self‐rated CG and PTSD symptoms in 85 Dutch adult homicidally bereaved men and women. We compared changes in symptoms of CG (assessed using the Inventory of Complicated Grief) and PTSD (assessed using the Impact of Event Scale) between an intervention group and a waitlist control group. The treatment was effective in reducing CG and PTSD symptoms, from pretreatment to posttreatment. It can be concluded that EMDR and CBT seem promising treatments for homicidally bereaved individuals for both men and women, and regardless of the time since the loss. Further research is needed to examine whether a combined treatment of EMDR and CBT together is of added value in situations where grief and trauma are intertwined over offering only one of the two treatment modalities. - Clinical Psychology & Psychotherapy, Volume 25, Issue 4, Page 497-508, July/August 2018.