David Adams is co-founder and Director of Emerge, the first counselling center in the nation for men who batter. The organization also offers support referrals for families and training courses that outline intervention methods in abusive behavior.

Adam's book "Why Do They Kill?" includes interviews with 31 men who murdered their intimate partners. Adams outlines the five distinct types they exhibited.

Victims advocates say the book has improved threat assessment and offers better information for victims.