. >> marcus kaarma was on trial for killing an unarmed teenager in his garage.ustified but planned. to prove it, they put the defendant's wife on the stand. she said the same thing. they were living in fear of intruders. >> literally every day, i was like paranoid. looking over my shoulder all the time. >> so why did they leave the garage door wide open on the day of the shooting? >> janel said they smoked cigarettes in the garage and wanted to air it out. >> i believe it was my right to leave the garage door open to air it out. >> the prosecution suggested that they left the garage door open on purpose. she denied it but said she de b deliberately left her purse in the garage. >> the purse was for them to take so they wouldn't come into my house so i could call the police and say here is something traceable. >> prosecutors said they set the stage and watched. so when he walked in, they weren't scared, they were excited. >> it's like show time. >> she denied saying those words. >> do you remember saying show time or something like that? >> no, i don't remember s