Writer:	Jan Oxenberg
Director:	Allison Anders
Star:	Jeremy Ratchford (Det. Nick Vera),  Thom Barry (Det. Will Jeffries),  John Finn (Lt. John Stillman),  Kathryn Morris (Det. Lilly Rush),  Danny Pino (Scotty Valens)
Recurring Role:	Marisol Nichols (Elisa),  Doug Spinuzza (Lab Tech Louie Amante)
Guest Star:	Michael Harney (Charlie Rinzler (2004)),  Jocko Sims (Lionel Royce (1969)),  Terrence Flack (Lionel Royce (2004)),  Milauna Jemai (Colette Ferguson (1969)),  Maggie Grace (Renee (1969)),  Elayn Taylor (Colette Ferguson (2004)),  Jim Gleason (Dr. Leo Linden (1969)),  Watson Watring (Dr. Leo Linden (2004)),  Jason L. Miller (Jonny),  Mary Joan Negro (Renee (2004)),  Katee Sackhoff (Terri Maxwell (1969)),  Scott Caudill (Eliot Karp (uncredited)),  Danny LaCava (Jason),  Riley Schmidt (Adam Clarke (1969)),  Chris Sarandon (Adam Clarke (2004)),  Garland Whitt (Gerard Gary (1969)),  Amber Benson (Julia Hoffman (1969)),  Trever O'Brien (Charlie Rinzler (1969)),  Karen Austin (Terri Maxwell (2004))

International Airdates:
- Denmark: May 5, 2004 on TV3+ (edit) Guest stars Amber Benson and Michael Harney both previously guest starred in the Buffy the Vampire Slayer episode 4-22: Restless as Tara Maclay and Mr. Harris, respectively. Coincidentally, Amber Benson's character is shot in both shows. (edit) Music Featured in This Episode:
- Volunteers by Jefferson Airplane
- Somebody to Love by Jefferson Airplane
- Mercy Mercy Me (The Ecology) by Marvin Gaye
- Whiter Shade of Pale by Procol Harum
- Say It Loud (I'm Black and I'm Proud) by James Brown
- Love Is All Around by The Troggs
- White Rabbit by Jefferson Airplane
- I Shall Be Released by Joe Cocker
- Get Together by The Youngbloods (edit)

Lionel: I was collecting reparations for slavery.
Vera: From a 7-Eleven? (edit) Scotty: Do not give out addresses except in emergencies.
Lilly: I'd call a double homicide an emergency. (edit) Lt. Stillman: We got the FBI file on Jane.
Scotty: They had a file?
Lilly: And they gave it up?
Lt. Stillman: Public record now. (edit) Renee: I need money (for an abortion).
Charlie: Screw you, Renee. (edit) Elisa: (to Lilly) You're a detective? But you're so beautiful. (edit)

This episode marks the first appearance of Scotty Valens' girlfriend Elisa (Marisol Nichols) to whom he has been heard talking on his cell phone in previous episodes. (edit) Julia Hoffman and Gerard Gary were murdered on June 3, 1969. (edit)

Title: Volunteers
The episode title is taken from the song Volunteers by Jefferson Airplane, which is heard as the opening song. (edit) The Summer of Love
When the team finds out that the victims were killed in the late 1960's, Lilly says this referring to the era. The Summer of Love was a phrase given to the summer of 1967 when the hippie movement began in San Francisco. The term is often mistakenly used of the summer of 1969 -- the year this episode's victims died -- because that is when the Woodstock music festival took place. (edit)