I'm with you on this one, Kimster. I sure do think it was an overdose. Whether the drug was ingested accidentally, or she was induced still remains a question for me.
I am of a strong opinion that this was the reason for the flurry of calls, RC was controlling, and not about to get his hands dirty when he had Misty who could do the dirty work and take the fall. Afterall, she had a brother or two, and a cousin she could enlist to assist her.
And, of course, Ron headed to work, he was going to make sure he had an alibi, and the Croslins were the perfect cover for his sorry



.
As you can tell, I am not an RC groupie. I think his hands are dirty, real dirty, and Misty can't pass a polygraph because she won't come completely clean about RC.
This day will come, and soon I hope.