WARWICK — Prosecutors showed crime-scene photos of Margaret Duffy-Stephenson’s lifeless body yesterday as the trial of the man charged with her murder continued in Kent County Superior Court.

James Richardson, of Cranston, is charged with killing Duffy-Stephenson on Nov. 18, 2005, a few days after she returned home from a family vacation in Florida. Duffy-Stephenson, 37, was a teacher’s aide for special-needs students at Archie R. Cole Junior High School in East Greenwich. She was found fatally stabbed in her Blackmore Street home.

Since the trial began last week, jurors have heard testimony from her husband, James O. Stephenson III; John Duffy, her father who discovered her body; and a series of coworkers and acquaintances of Duffy-Stephenson. Yesterday, prosecutors continued with police testimony, calling Detective Daniel Gillis and criminalist Walter Williams, both from the West Warwick Police Department Bureau of Criminal Investigation, to the stand.

Williams and Gillis were part of the team that collected evidence from the crime scene shortly after Duffy-Stephenson’s body was found.

As Gillis spoke about where the team found blood, Assistant Attorney General William J. Ferland placed a crime scene photo on the overhead projector. An image of Duffy-Stephenson’s body, crumpled at the bottom of the stairs, appeared on a large screen on the side of the courtroom and on two televisions in the spectator gallery.

Dressed in blue pajama bottoms and a blood-stained tank top, Duffy-Stephenson lay face up with her head and shoulders resting on the staircase and much of her body in the small wooden foyer at the front door. One foot was propped up against the front door while the other was bent beneath her at the knee. Blood stains dotted the front door and adjacent walls.

Gillis walked jurors through photographs he took of blood stains found in an adjacent bathroom, along the main staircase, and in the basement. Throughout the time officers were in the house, Gillis testified, the family’s dog barked incessantly.

During the investigation, they found a bloody footprint in the upstairs bathroom and a footprint outline on a bathroom rug in the basement, Gillis testified. They also found bloody smudges on a light switch in the first floor bathroom, a droplet of blood on the toilet and bloody tissue in the bathroom trashcan. Later, Williams explained what various blood patterns told investigators about the crime.

Blood spatter, formed when blood is forced from a source to another surface, appeared on the window shades in the bedroom next to where Duffy-Stephenson was found. The room belonged to her then-3-year-old son, Robert.

“The trajectory was from right to left,” Williams said, indicating the blood came from the direction of the body into the bedroom.

The investigators found a number of blood smears — on the front door, on the walls leading downstairs, and on a support post at the end of the basement stairs — that Williams said was transferred from some sort of cloth to the walls. On the wall leading downstairs, a “light deposit of blood about five feet long and one foot wide” had a black mark running the length of the mark, which paralleled the handrail. Williams did not explain what the black mark was from.

Williams’ testimony will continue today.