I wonder if Darin had a large life insurance policy on Darlie. Does anyone know for sure? He could have been looking for someone to kill Darlie instead of a robbery to get out of debt. Especially if he was having an affair or thought she was going to leave him.
There was a life insurance policy on both Darlie and Darin, but I don't think it was "large." Darlie was the first one attacked that night. However, her wounds were only superficial. Had the killer wanted her dead, why not just plunge the knife into her heart? There is absolutely no evidence that Darin was having an affair. Since Darlie had no income, no car and no skills, its rather impossible that she was thinking about leaving him for real, although from what I've heard and read about Darlie, she threatened to so quite often.
Also he could have had a key made for this person to gaurentee entry and told them to make it look like a breakin. He advised to use the back door and that she would probably be on the couch. The dog did not bark because it was a quiete form of entry. He probably did not count on the boys sleeping downstairs and was unsure which night this would happen.
Not possible for reasons outlined above.
I also I am curious if phone records were ever checked, especially after the murders and Darlie's arrest.
Yes, the records were checked.
If something like this occured Darin can not give information to free Darlie without incriminating himself.
True.
Another possible scenerio is that these thugs were to rob the house only, but committed murder and sexual assult instead. I read that a pubic hair was found and Darlie's underwear were missing. Could she have been drugged and sexualy assualted?
There was no sexual assault. The only person who said Darlie's panties were missing is Darlie and since nothing else she said that night was the truth, its my opinion and the opinion of many others that she simply took them off and put them into the same basket of dirty laundry that she took the sock out of.
There is so much evidence that needs to be tested an accounted for. How did Darlie's saliva get on the sock found outside? Can the timeline prove her innocent?
Where did you get the impression that there was "saliva" on the sock? There was DNA on the sock, and the experts said (if I'm not mistaken) that it was most likely dead skin cells.
I honestly do know what to think about her guilt or innocence. I do believe in hard, physically evidence and things need to be analyzed more to reach a conculsion.
The FBI and state crime labs - AND experts from Darlie's defense team have all analyzed the evidence and the results all come back to Darlie being the perp.