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A forensic computer analyst, who worked for the Secret Service, explained his work in this case. Prosecutors alleged Yazeed Essa's internet activity in the days, hours, and minutes leading up to the death of his wife, Rosemarie, was incriminating evidence. Computer searches, deleted files, phone calls, and emails were all presented to the jury.

The jury listened to more details about internet searches done on his computer. Prosecutors were convinced that a digital trail would show that he concocted and carried out a plan to kill his wife, Rosemarie. Secret Service agent Jason Berryhill faced cross-examination. He said he came across internet activity of Yazeed browsing the British Airways website. Prosecutors wanted to show that he devised a plan to leave the country during the investigation into the murder of his wife, Rosemarie.

Prosecutors called in Yazeed Essa's cousin to testify against him. This was the fourth cousin who took the stand for the State. They questioned these relatives about the days leading up to Rosmarie's death and what happened later. Yazeed Essa's cousin testified that the defendant narrowed down the two places in the Middle East he could go when he left the U.S. One of those was Lebanon, where he ended up.

A professor of emergency medicine and medical toxicology took the stand. Dr. Christopher Holstege broke down for jurors how much cyanide exposure would end a person's life. When Rosemarie Essa died, she had a fatal amount of the poison in her system. The professor lectured to the jury: Cyanide poisoning causes a number of different arrhythmias. That's what makes it tricky, clinically.

By all accounts, Richard Carno had no enemies; so when he was found dead in his car with a bag taped over his head, investigators wondered who could have done it; a trail of evidence would point to those closest to him: his wife and brother-in-law.

Mark Richards was paralyzed in a car accident; his live-in caregiver, Gloria Guzmán, was also his wife; when she called 911 to report that Richards had drowned in his bath, paramedics were suspicious.

Successful Atlanta entrepreneur Lance Herndon usually got what he wanted, but when he is found bludgeoned to death in his waterbed, it appeared he got more than he could handle, possibly due to a business deal gone wrong or a girlfriend's revenge.

When an unknown assailant guns down sheriff-elect Derwin Brown shortly after winning his election, investigators suspect a political assassination, only to instead uncover an extensive trail of corruption.