A manhunt for the killer of a married Arkansas couple who were hiking Devil’s Den State Park with their two young daughters has entered its fourth day, after police released a composite sketch of a man they believe is a suspect and stated the killer likely sustained an injury during the attack. The couple, Clinton and Cristen Brink, were found dead on a walking trail in the park, while their daughters, ages 9 and 7, were uninjured and safe with family members. Authorities have not yet disclosed the motive or method of the attack, but a state police statement mentioned the suspect