Ex-wife pressed on dark side of dad in son's hot car death

(AP) — The video clips were cute enough to make jurors laugh as they watched Justin Ross Harris try to teach his son to say "banana" and let the toddler strum on his guitar.

The videos capped several hours of testimony Monday by Harris' ex-wife, who is a defense witness at Harris' murder trial.

Prosecutors wasted little time on cross-examination reminding Leanna Taylor, who divorced Harris earlier this year, and the jury that the former husband she described as a loving dad had a much darker side.

Evidence in the trial, now in its fifth week, has shown Harris was sending sexual text messages to a teenage girl from his workplace while his son was dying outside in a parking lot.

Jurors got a look at Harris' family life when defense attorney Maddox Kilgore had Taylor walk them through a series of photos and video clips from Cooper's birth to a family trip shortly before his death.

Prosecutors say Harris wanted to escape the responsibilities of family life and spent his time seeking sexual relationships both online and in person with women outside his marriage.