While You Were Sleeping: Catch Me if You Can, Part 1

SYNOPSIS

After the arson, Criminal Division Three is swamped with work. Woo Joo and Hee Min look into the arson case, and Ji Gwang and Jae Chan reinvestigate the IV drip serial murder case. Hong Joo also begins to look into the case. Meanwhile, Yu Beom receives a mysterious text message from the real killer.