NOTE: Some of the language and images in Monday's testimony may be offensive to younger or more sensitive individuals. Viewer discretion is advised.

Leanna Taylor, ex-wife of Ross Harris, began her testimony on Monday, the 17th day of testimony in the Ross Harris hot car death trial in Brunswick, GA.

Taylor broke down in tears as she described her son, Cooper Harris, the 22-month-old who died in the back seat of Ross Harris' SUV in a Vinings office park.

She additionally detailed sexual dysfunction within their marriage, and whether or not she was aware of Harris' infidelity.

Click here to watch Monday's live streaming coverage

Ross Harris faces a number of charges, including malice murder and felony murder in the June 2014 death of Cooper. The defense claims the death was the result of a tragic accident.

The defense began to build their case last Friday afternoon by calling Roger Webb, a man that leased a home to the Harris’, and Cobb County detective Shaun Murphy to the stand.

Murphy worked with Phil Stoddard on the case, and the defense pointed out his mistake in measuring the height of the SUV Cooper died in was critical to the case.

RELATED | Official jury video of Ross Harris SUV released by court officials

After questioning concluded for the day the defense asked for a second mistrial in the case. They claimed the prosecution failed to prove their case and only offered misinformation and lies in their presentation. Judge Staley one again denied their mistrial request, only one day after their previous request for a mistrial.

PHOTOS | Leanna Taylor takes the stand in the Ross Harris trial

PHOTOS | Ross Harris Hot Car Death Trial - Day 16