The 4th season of Code of Law will explore more hard - hitting and headline cases of brutal or heinous crimes that shocked Singapore. This season sees the return of familiar favourites like lawyers Jacob Fernandez, Stephanie Szeto and Sanjay Devaraj, along with Razali Hamzah, Nick Han and Audrey Soh from the police force. Each week, the team of investigators must race against time to solve crimes and bring the perpetrators to justice. The 11 - episode series will pack in captivating new characters and plot twists, including one of a serial killer, Derek Ho played by Desmond Tan. Derek Ho leads a double life. A suave and charming high - flying banker by day and by night, a murderer with an abnormal psychological gratification for killing. He is introduced to Stephanie and soon, the two are dating. Danger looms as their relationship develops.