fentanyl overdose epidemic! Matt Yurus, WUSA6:08 PM. EST June 03, 2016 WASHINGTON (WUSA9) -- The powerful synthetic painkiller that took the life of Prince is contributing to the death of users in the Washington, D.C. area as well.The opiate is fentanyl, heroin"s deadlier cousin. Doctors prescribe it to cancer and hospice patients to curb severe pain. Dealers, however, sell heroin laced with fentanylbecause cost...