Multiple year flashbacks

1x03 Our Boy is Back  Directed by Bryan Spicer
 Written by Stacy Kravetz
 First Air Date : Sunday, 12 October 2003
 Flashback year : 1998 (5 years ago)
   Based on real case : Troy Graves

Lilly Rush reopens a 1998 cold case that drove Vera nuts. They receive a letter from the serial rapist whose last victim, Gail Chimayo, was also killed and who is about to strike again after no activity during the last 5 years.
Once the main suspect, Gail's boyfriend, is finally discarded, the case gets a whole new angle. Lilly's
sensitive and soft approach makes the rape victims more inclined to talk. The pair obtain a composite and then a scenario detailing how the rapist picks his victims, leading them to the killer.

He's bragging, he's telling us he's back

I just wish we could met under different circumstances.

Vera: this case became a health issue for me

1x05 The Runner  Directed by David Straiton
 Written by Veena Cabreros Sud
 First Air Date : Sunday, 26 October 2003
 Flashback year : 1973 (30 years ago)
   

After a drug addict brings in an audio tape she found on which a fatal shooting is heard, Lilly reopens a 1973 murder case involving the death of a 21-year-old rookie cop, Joe Washington. The young officer was shot three times in the chest while responding to a call at a drug-infested housing project. Also on the tape are the victim's final words: "Runner! Runner! Runner!"

1x10 The Hitchhiker  Directed by Marita Grabiak
 Written by Sean Whitesell
 First Air Date : Sunday, 21 December 2003
 Flashback year : 1997 (6 years ago)
   

Rush and Valens investigate the case of a cold-blooded killer who shot a young man trying to hitchhike his way home to Philly from Atlantic City.

1x21 Maternal Instincts  Directed by Kevin Hooks
 Written by Laurie Arent
 First Air Date : Sunday, 25 April 2004
 Flashback year : 1989 (15 years ago)
   Based on real case : Cathleen Krauseneck

The 1989 case of a woman murdered in front of her 3-year-old son is re-opened. A psychologist asks Det. Rush to look into the case again when the son, now a 17-year-old teen, suffers from intense nightmares and troubled behavior.

Red and yellow balloons. A train and the name "Bobby". That's what I remember about her being murdered.

2x09 Mind Hunters  Directed by Kevin Bray
 Written by Veena Cabreros Sud
 First Air Date : Sunday, 28 November 2004
 Flashback year : 1985 (19 years ago)
   Based on real case : Robert Hansen

The headless torso of a woman who disappeared in 1985, on the same day she filed domestic-abuse charges against her husband, is found by hikers in a wildlife preserve. The investigation quickly leads to the grisly discovery of 8 more decapitated bodies, the victims of a serial killer.

2x13 Time to Crime  Directed by Tim Hunter
 Written by Tyler Bensinger
 First Air Date : Sunday, 30 January 2005
 Flashback year : 1987 (18 years ago)
   

After a murder weapon connected to the 1987 drive-by shooting of a little girl turns up, Det. Rush and her team re-open the case. The team slowly tracks back the gun's previous owners until the shocking original owner is finally revealed.

2x16 Revenge  Directed by David Von Ancken
 Written by Jay Beattie
 First Air Date : Sunday, 13 March 2005
 Flashback year : 1998 (7 years ago)
   

Lt. Stillman's priest informs him of a long ago confession where a man confessed being involved in the 1998 kidnapping of a 9-year old boy. The case is reopened with this new lead, and it turns out the truth is closer to home.

3x06 Saving Patrick Bubley  Directed by Marcos Siega
 Written by Tyler Bensinger Karin Lewicki
 First Air Date : Sunday, 6 November 2005
 Flashback year : 1999 (6 years ago)
 Film tribute : Saving Private Ryan
 

When a mother of five loses her fourth son to gang violence, Lilly sets out the save the youngest, reopening one of her first cases on the homicide squad.

Solve one Bubley murder, solve them all.

3x11 8 Years  Directed by Mark Pellington
 Written by Meredith Stiehm
 First Air Date : Sunday, 8 January 2006
 Flashback year : 1988 (18 years ago)
   

Four close high school friends each went their separate ways in 1980. Eight years later, in 1988, one of them was murdered. The homicide team receives a tip about the murder, prompting a re-investigation of the case and an examination of the friends' lives, hopes and dreams after high school.

3x16 One Night  Directed by Nicole Kassell
 Written by Veena Cabreros Sud
 First Air Date : Sunday, 19 March 2006
 Flashback year : 1980 (26 years ago)
   

Lilly and the cold case team will have to decode the clues given by a twisted killer in order to save the life of a young boy who has been left to die alone. But first they must find the boy and for that they need to dig a little deeper into their own pasts.

The first is denial. Then anger. Then bargaining. Depression and acceptance.