J. T. seemingly reappears after his death but was later revealed to be Nicholas Newman wearing a prosthetic mask impersonating J. T. in order to get revenge on Victor and regain custody over Christian by exposing documents regarding Victor's health issues following the attack.
The character J.T. seemingly died but then reappeared, only to be revealed as Nicholas Newman using a mask to impersonate him for revenge against Victor and to gain custody of his son, Christian, by revealing Victor's medical records after the attack.