To tcg1026: Your answers are correct, but for number 5, the suspect was Marco Ngai.
To Kawaiikiwi: Correct!! The suspect was Moses Chan, because he was meeting with Michael Tong, but Mark Kwok was his witness.
To babysugargirl: Series: Forensic Heroes. Criminal: A Nurse. Victim: A wife with cancer (Jay Lau). Suspects: Bobby Au Yeung and ????????????. Crime: Murder-Poison.
To Everyone: The following are still in play-
1) Series: The Vigilante in the Mask. Criminal: Victim: Kenneth Ma Witness: Suspect/s: Crime: Father Kill Son/Murder.
1) Series: The Vigilante in the Mask. Criminal: Hui Siu Hung Victim: Kenneth Ma Witness: Eileen Yao? Suspect(s): Fiona Yuen Crime: Father Kill Son/Murder.
To honeybee: Correct honeybee!! The witness for no. 2 is Charmaine Sheh. You just need the series now.
To babysugargirl: Series: Forensic Heroes. Criminal: Vinci Wong. Victims: Lots of women. Suspects: ?????????? (haven't watched this series yet, so i'm not sure). Crime: Rape/Murder.