Threesome (), is a 2018 legal comedy drama produced by TVB. It stars Mandy Wong, Benjamin Yuen and Jason Chan as the main cast, with , Snow Suen, , , and as the major supporting cast.
The drama earned critical acclaim and won My Favourite TV Drama in both Malaysia and Singapore in 2018 TVB 51st Anniversary Gala. Mandy Wong earned critical acclaim for her performance in the drama, playing Evie Fong Yee-yan, a barrister with dissociative identity disorder, along with Evie's two other personalities, Piña Colada and Sau Mak Mak, winning Favourite TVB Actress in a Leading Role in both Malaysia and Singapore in 2018 TVB 51st Anniversary Gala.
Evie Fong Yee-yan (Mandy Wong) is a well-known barrister. In fact, she has Dissociative Identity Disorder. Although Evie keeps this secret from everyone, Lee Tong-kai (Benjamin Yuen), Evie's childhood friend, finds out she has DID by chance. In order to marry Theo Kei Hiu-yung (Jason Chan Chi-san), Evie accepts Kai as her apprentice and Kai must not reveal her secret to anyone.