"Twins, separated at birth, end up as a Hong Kong gangster and a New York concert pianist. When the pianist travels to Hong Kong for a concert, the two inevitably get mistaken for each other."
Jackie Chan
as Ma Yau (John Ma) / Bok Min (Boomer)
Maggie Cheung
as Barbara
Nina Li Chi
as Tong Sum (Tammy)
Teddy Robin
as Tarzan (Tyson)
James Wong Jim
as Mr. Ma
Sylvia Chang
as Mrs. Ma
Kirk Wong Chi-Keung
as Crazy Bull
David Chiang Da-Wei
as Sgt Chiang / Hotel Security
Mabel Cheung Yuen-Ting
as Tsui
Alfred Cheung Kin-Ting
as Boss Yung
Johnny Wang Lung-Wei
as Wai
Anthony Chan Yau
as Hotel Concierge
Jacob Cheung Chi-Leung
as Cafe Cashier
David Wu
as Cafe Waiter
Philip Chan Yan-Kin
as Hotel Manager Chen
Lau Kar-Leung
as Doctor
Wong Jing
as Spiritual Healer
Tony Ching Siu-Tung
as Violinist
Gordon Chan
Chor Yuen
as Uncle Tang
Jamie Luk Kim-Ming
as Frankie Lo / Rocky
Guy Lai Ying-Chau
as Advisor Tsao
Eric Tsang Chi-Wai
as Man on the Telephone at Concert Lobby
Dennis Chan Kwok-San
as Snakehead Sun
Clifton Ko Chi-Sum
as Department Store Clerk
Stephen Tung Wai
as White Van Driver
Tsui Hark
as Card Player
Ringo Lam Ling-Tung
Ng See-Yuen
John Woo
as Priest
Tsui Siu-Ming
Ann Hui
as Mrs Ma's Gynaecologist
Mars
as Rascal
Chan Tat-Kwong
as Thug
Benny Lai Keung-Kuen
Roman Tam
James Ha Chim-Si
Andrew Lau Wai-Keung
as Party Guest
Raymond Lee Wai-Man
as Vendor
Teddy Yip Wing-Cho
as
Joe Cheung Tung-Cho
Jameson Lam Wa-Fan
Lau Kar-Wing
Fung Hak-On
Dion Lam
Nicky Li Chung-Chi
Johnny Cheung Wa
David Lam Tak-Luk
Peter Mak Tai-Kit
Yang Chuan
Norman Law Man
Director
Barry Wong Ping-Yiu
Writer
Bill Lui Cho-Hung
Art Direction
Michael Wandmacher
Original Music Composer
Barrington Pheloung
Lowell Lo Koon-Ting
Story
Producer
Marco Mak Chi-Sin
Editor
Wong Yik
Horace Wong Wing-Hang
Director of Photography
Arthur Wong Ngok-Tai
Yuen Woo-Ping
Stunts
Tony Leung Siu-Hung