Joshua Young, 17, is charged with "complicity to murder" and "complicity to tampering with physical evidence" in the 2011 beating death of his 14-year-old stepbrother, Trey Zwicker. Josh Gouker, Young's father and Zwicker's stepfather, was already sentenced to life in prison with possibility of parole after 20 years for the death of his stepson.
Young spent time in foster care after his mother died from a drug overdose but was then returned to his father's care in March 2011, a few months after Gouker was released from prison.
So when it comes to the murder of his stepbrother, is Young only guilty by association? Our experts present all the evidence and what you need to know about the teen's childhood and his own decision making tonight at 10 p.m. ET on HLN After Dark.