ST. PETERSBURG, Fla. — The defense rested its case Friday in the trial of John Jonchuck, and closing arguments will begin Monday morning.

Jonchuck is charged with dropping his 5-year-old daughter off the approach of the Skyway Bridge in January 2015. His defense is arguing he is not guilty by reason of insanity.

In court Friday, Dr. Michael Maher took the stand and talked about the "malingering" claim made earlier by Dr. Emily Lazarou. 

"In my experience, it would be absolutely unheard of," Maher said on the possibility of Jonchuck malingering, or faking, symptoms for four years.

Also in court Friday was witness Heather Davis, who counseled Jonchuck at the state hospital, who said she's seen him show empathy.

The defense finished its questioning of Lazarou on Thursday afternoon.

Closing arguments are expected to begin at 11 a.m. Monday.

If he is found guilty, Jonchuck will spend the rest of his life in prison. Otherwise, he'll go to a mental institution and likely never be released.

RELATED:

Stay with Spectrum News for updates from court. You can also follow Cait McVey on Twitter.

LIVE UPDATES FROM COURT: