Jodi Arias' first-degree murder trial resumes Wednesday for the 2008 Arizona killing of her ex-boyfriend Travis Alexander.

Fans of the trial can watch the free live stream below.

Prosecutor Juan Martinez cross-examined the defense expert, PhD psychologist Richard Samuels, again on Tuesday. Through intense questioning, Martinez brought up several inconsistencies in Arias' tale of events that took place the day she killed Alexander. He also revisited her stories that Alexander pressured her to have sex too quickly.

Martinez discredited the credibility again of Arias' defense expert. He read an article out loud in the Maricopa County court room that said one of the tests Samuels gave her to take, the MCMI exam, should not be used in the court of law. On Monday, the prosecutor said because Samuels is a PhD not an MD, he may not be qualified to use the Post-traumatic Stress Disorder diagnosis to support Arias' "foggy" memory claims.

"It's saying basically that this is not something that is set up to be used in a court case," Martinez told Samuels, according to HLNTV.

"No, that's not what it says," Samuels replied.

"Well it does say that this 'instrument does not allow for a client or defendant's score [test results] to be interpreted according to a criteria of normality that may be an important factor to assess in a court case.' Yes or no?" Martinez asked the defense expert.

"That's what it says. And what are you reading from sir?" asked Samuels.

"Sir, I ask the questions. Do you understand that?" said Martinez, to which Samuels answered "Yes."

Samuels testified on March 14 that Arias has PTSD. The psychologist supported her "foggy" memory issues she claimed she has as to the reason why she cannot recall how and exactly when she stabbed her victim at least 27 times. On Monday, the defense expert testified that Arias experienced memory loss brought on by severe trauma and stress. Martinez then undermined Samuels during his cross-examination again when he stated that because Arias lied many times, she does not have PTSD. 

Arias took the PTSD test 15 times, according to Samuels, and the accuracy depends on the honesty of the person taking the test. Samuels admitted she took the test before she admitted to killing Alexander- when she lied and said he was killed by two intruders- and that he did not test her again after she admitted she killed him. He said it was an "oversight" on his part and that she should have taken the test again after she confessed to the brutal crime because the accuracy of the test is based on honesty.

Arias is charged for the brutal 2008 murder of her ex-lover Alexander, a 30-year-old Mormon motivational speaker. Arias stabbed her victim over 27 times, slit his throat from ear to ear and shot him in the head. His body was discovered the day he was killed: June 4, 2008. Arias lied twice at first about how he died and later admitted that she killed him in an act of self-defense.

If Arias is convicted of the murder and the lies that she confessed to, she will likely face the death penalty and become the fourth woman in Arizona's history to die by lethal injection.

Watch the live stream of Arias' murder trial on Wednesday beginning at 4 p.m. ET.

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