Highs and Lows

Gordon Heung and Wai Sai-Lok have been long-time collaborators in the police force, frequently working with each other to solve drug trafficking cases in the city. During an operation, Sai-Lok discovers clues that point to Gordon being a corrupt cop in a collusion conspiracy with drug dealers. Suspicious about Gordon's true intentions, Sai-Lok launches a secret investigation on him.

• Yip Tin-ShingWriter
• Leung Yan TungWriter

• Raymond Lam FungWai Sai-Lok (Happy)
• Michael Miu Kiu-WaiHeung Wing (Gordon)
• Ben Wong Chi-YinPoon Hok-Lai (Brian)
• Ella KoonKo Hei-Suen (Sandy)
• Kate Tsui Tsz-ShanChan Ka-Pik (Pat)
• Elaine Ng Yee-LeiMadam Yu (Helen)
• Derek Kwok Jing-HungHo Kwai
• Law Lok-LamCheng Chi-Seng
• Jazz Lam Tsz-SinNin Yau-Fu
• Jin Au-YeungNg Dak-Tim
• Li Hung-KitCast
• Cheung Ka-yiCast