Ryan Powell gave his son, Brandon, promicin in the hopes that it would cure him of autism. Instead of curing him, it gave him the ability to trigger a person's greatest fear, and then they have realistic hallucinations of them.
Tom and Diana tracked Brandon down and brought him back to NTAC where Shawn Farrell cured the young boy of autism. NTAC allowed Brandon to live with his mother as long as he stayed on the promicin inhibitor. Ryan was placed under arrest for injecting his son.