陳展鵬
Keith Lau Sz-kit (劉思傑; "Lau Sigit"), portrayed by Ruco Chan, is one of the three barristers at Clayton Hau Chamber and the mentor of Norman Shum and Cecilia Pun. Ambitious, fearless, but righteous, Keith tends to overstep boundaries to achieve justice, even if it meant to put his own career at stake. Keith is good friends with Wallace Cheuk, the owner of the chamber's business partnership Wallace Cheuk &amp; Co. Solicitors; James Wei, a colleague and classmate during law school; Danny Mo, a solicitor; and Mavis Hong, whom Keith initially dislikes. Both Keith and Mavis eventually fall for each other, but they are unsure if their feelings for each other are romantic or platonic.