1x2 - Written in Blood

February 1, 2011

A Florida man makes an emergency call to police. He's arrived home to find his wife murdered and his house robbed. It looks like a burglary gone wrong--but blood on the husband's clothes may tell a different story.

1x3 - Evidence from Ashes

February 6, 2011

Three children and their parents are killed when a deadly fire rips through their home. Was this a tragic accident? Or was the family victim of a terrible crime? Fire Inspector Victor Zamaloff is called in to investigate.

1x4 - Digging Up Evidence

February 14, 2011

A robbery turns deadly and while the criminal tries to hide the evidence, high-tech crime fighting equipment goes into action. Shot Spotter alerts investigators who arrive at the scene.

1x5 - Maggots Tell Tales

February 16, 2011

Residents of a Florida neighborhood complain that a stench of decay is hovering over a backyard. Police respond to find a rancid odor and a seething mass of maggots. Days later, a decomposing body is found twelve miles away.

1x6 - Cut and Print

February 23, 2011

A man is murdered, brutally stabbed with a steak knife. The victim's neck, chest, and legs have been slashed. The crime scene is flooded in blood.

1x7 - DNA: It's Not What You Think

March 2, 2011

A shocking claim: a young boy, it would seem, has been sexually abused. Or has he? Underwear with his father's semen on it is found at the scene of the crime. But what does it really mean?

1x8 - The Dead Speak

March 7, 2011

1x9 - Digging Deeper

March 13, 2011

Meet Royce D. Wilson, known to his colleagues as "Rayce." As the Director of Forensic Services for the Hillsborough County Sheriff's office he is knee-deep in every homicide scene in Tampa, Florida.

1x10 - The Right Stuff

March 19, 2011

At an unprepossessing house in Poughkeepsie, a serial killer stores eight dead bodies, grisly victims of cruel and sadistic murders.

1x11 - Crime Bites

March 24, 2011

Dead man is found covered in bite marks.

1x12 - It's Not So Elementary

May 18, 2011

CSI only gets one chance to document a crime scene.

1x13 - Swindle in Suburbia

September 30, 2011

It's the American Dream: owning a home in a good neighborhood. Never did it seem more accessible than during America's housing boom. But dreams went bust when mortgage rates for homeowners' in a Pennsylvania development suddenly went through the roof.

1x14 - Trace Evidence

A smash and grab robbery. A hit-and-run car accident. A mad gunman firing into a crowd. A horrifying car crash on a highway. An illegal tree cutting operation and an arsonist setting a deadly blaze.

1x15 - Did Speed Kill?

It's three o'clock in the morning when rising soccer star Mathew Maher rear ends a minivan on New Jersey's Atlantic City Expressway.

1x16 - The Art Of Sleuthing

Shots are fired in a suburban shop. A robbery turns deadly. And while the criminal tries to hide the evidence, high-tech crime fighting equipment goes into action.

1x17 - Splitting Hairs

Forensic serologist Gordon Calvert extracts evidence from spit, blood, and hair. Sometimes crime scenes contain enough evidence for a straightforward determination. Others are a puzzle.

1x18 - Connect The Crime Dots

A woman is ambushed in front of her home, shot at close range while she sits in her car talking on her cell phone. Just before the shots, the victim screams there he is! No name, but police think they know who did it.

1x19 - Canine Crimesolvers

16 year-old Brittney Gregory disappears from her father's house with no sign of foul play. Family friend Jack Fuller brags of burying a girl "in the middle of nowhere," and two weeks of searching threaten to prove his boast true.

1x20 - Hidden Graves

A blood stain, missing money, and a confession. But where is the body? Equipment salesman Michael Marques is murdered in his own driveway.