It stars Li Nanxing, Rui En, Qi Yuwu, Joanne Peh, Elvin Ng, and Tracy Lee for the third installment of the third series.
Xin Yi has since been transferred to the Traffic Police Department and struggles with post-traumatic stress disorder from her time overseas with the UN after witnessing an incident there.
Tze Keat and Wee Lum Thiam are married and the latter has transferred from the Forensics Branch to the Criminal Investigation Department (CID).
Kwee Xiang and Xiaoyang return from the first season and it is revealed that they are now with the Traffic Police Department.
Fugitive Chan Yin Kwun, a former psychiatrist and pedophile, returns with a vengeance to settle scores with Lum Thiam.