Dr. Macy and Jordan work with a new detective Hoyt to investigate the death of a woman during a bank robbery that may be more than meets the eye. Nigel badgers Bug into looking more closely at the death of a man who died on a bus.
Jordan investigates a body tossed from a roof. Max's bar may not open due to an old beef with a mob boss. Trey's father (Paul Winfield) visits. A government auditor assesses if the department is overstaffed.
Jordan looks into a suspected mercy killing and also hears from her estranged grandmother. Garrett and Trey puzzle over a concentration camp victim's death. Garrett's ex-wife's partner leaves her. A reality show is considering setting a series in the morgue: could Bug or Nigel become its star?
Garrett and Trey delve into the mysterious death of a basketball player at Garrett's daughter's High School. Jordan' case involves a suspected addict's death and a missing baby. Bug and Lily wonder why a Chanel-clad woman has the rough hands of a maid. Nigel is taking tourists on crime-walks.
Jordan helps Woody with the case of a woman who is into sexual sadism. Bug has to see the shrink after he accuses the parents of an autistic boy of murder. Garrett is seeing his ex-wife. Lily goes on holiday to see her brother on Mexico.
Jordan works with a Marine investigator when the body of a woman who went AWOL in in Afghanistan ten days earlier is found. Garrett and Nigel look into the death of a local pimp. Lily tries to get over the her heartbreak by helping Bug deal with a Japanese businessman's suicide.
Jordan takes a walk down memory lane while investigating the death of a heart surgeon she worked with during rotations in medical school rotations. Bug and Nigel do battle with a cryogenics expert who won't let them autopsy the body of a man who fell of his roof. Lily tries to track down the donor recipients of a man with no family.
When Jordan and Woody are called to examine a corpse at a state mental hospital, she finds a link to her mother's murder. Garrett and his ex-wife contemplate becoming parents again. Lily and Woody bond over his classic robot collection.
An inmate in the mental hospital says he has information about the murder of Jordan's mother which he will give her if she proves he didn't kill his family. Lily decides to resign and go back to Pennsylvania.
Two months later, Jordan pursues the man who promised her information, while her father is investigated for framing him. A serial killer is plaguing Boston. A new medical examiner joins the team. Lily returns to become the department grief counselor.
Jordan teams up with the new M.E., Elaine, and finds herself in the middle of an ATF power struggle, when she investigates the death of Wendy Marsh, wife of alleged Unabomber-style terrorist and former ATF agent Lester Marsh - whose grief and rage over the personal vendetta held against him by a former partner Agent Hawkes, pushes him to strap on some homemade explosives and hold the morgue hostage. Meanwhile, a personal quest for love in the crypt and some friendly advice drives a wedge between long-time mates, Bug and Nigel.
Jordan investigates the apparent heart attack of an kind, elderly man. When a mysterious individual tries to steal his body, Jordan suspects foul play and begins investigating. However, appearances are deceiving, and the man turns out to be a Nazi war criminal, who was murdered. At the same time, Dr. Macy is being investigated for a possible botched autopsy that occurred three years ago. As he struggles to remember the details, he fears his job is in jeopardy. While a new doctor investigates Dr. Macy, he investigates why he doesn't remember any details about the ...
Jordan and Bug team up with a new, obnoxious detective to investigate the murder of a man who only hours before was on a blind date with Jordan. Meanwhile, after a train car separates and ends up in the river, Garret and Lily work together to track down the families of the victims and Nigel must deal with survivor's guilt after narrowly missing becoming one of them.