not prove a link between gun parts found at the brumback house and the gun that was licensed to anthony garcia. >> the parts found in the house are parts of a weapon that went through a catastrophic failure. the parts of our client's gun that were found on the side of the road showed no evidence of a catastrophic failure. >> and although it's the right kind of gun to have committed the murders, it's not necessarily the gun. >> right -- >> one of the right kinds of gun. >> you can't fire a test bullet from the gun, right? >> no. >> reporter: the chicago based defense team worked late into the night while keeping a close eye on their beloved cubs who were in hot pursuit of a world series title. >> it's the top of the second. cubs have men on first and second. it's one out. >> reporter: it was during these sessions over lunch -- >> there's no point in showing the cards that don't need to be shown. >> reporter: during breaks and at their rental home that the