Line Walker Word Search Puzzle – Search Characters, Actors and Actresses. Word Search Puzzle Solver. The details of undercover police officers are deleted from a police database and a senior officer is left struggling to know who are the undercover officers and who are the criminals. Find out the following actor, actress, character names, and other movie-related words hidden in this word search puzzle based on this movie.. This includes identifying and searching for words that are related to : Wai, Hing, Hung, Xing Yu, Hui Siu, Ben Yuen, Choi Kwok, Louis Koo, Clara Lee, Jade Leung, Jason Wong, Francis Ng, Moses Chan, Li Guangjie, Rebecca Zhu .