Colorado Dentist Enters Plea in Wife's Fatal Cyanide Poisoning

James Craig, a Colorado dentist, is set to enter a plea on a first-degree murder charge for allegedly poisoning his wife Angela with cyanide and tetrahydrozoline.
Craig had searched online for information on poison detection, making a murder look like a heart attack, and arsenic detectability before Angela's death.
Angela experienced symptoms like vertigo and shaking before being hospitalized and dying from the poisoning on March 18.
The defense argues there is no direct evidence linking Craig to the poisoning and suggests he was researching ways to kill himself.
Craig had an affair with Karin Cain, who believed he was divorcing Angela before her death.