1,599 Pages

WriterSarah Goldfinger
Eli Talbert
Carol Mendelsohn
Naren Shankar
DirectorKenneth Fink
Original AirdateMay 20, 2004

Bloodlines is the twenty third episode in season four of CSI: Crime Scene Investigation.


The CSIs investigate when a casino employee is beaten and raped on her way home from work. The victim identifies her attacker, but the DNA evidence suggests that he is not the person responsible. Later, Grissom has to help out a coworker who ends up on the other side of the law.

Plot Edit

Hodges This section is a stub and requires expanding

Cast Edit

Main Cast Edit

Guest Cast Edit

  • Alex Carter as Detective Louis Vartann
  • Joseph Patrick Kelly as Officer Metcalf
  • Ty Upshaw as Officer T. Brantley
  • Nina Siemaszko as Linley Parker
  • George Newbern as Dr. Todd Coombs
  • Lisa Sheridan as Crystal Coombs
  • Mark Kiely as Roger Coombs
  • Michael Reilly Burke as Bailey Coombs
  • Drew Pillsbury as Larry Coombs
  • Rachel Winfree as Psychic Patient Janet
  • Edmund Wyson as Officer Devine


  • Dr. Todd Coombs has a condition called Tetragametic chimerism which can cause a person to be different DNA in their body, for example, the semen would be different from their saliva. As Gil Grisson eventually found out when he get a look at the back of Dr. Todd Coombs.

See AlsoEdit

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