Dexter refuses to believe it at first, but he is suspicious enough to order blood work done on the accident; the results prove that Hannah had spiked Debra's water with an overdose of Xanax.
Dexter refuses to believe it at first, but he is suspicious enough to order blood work done on the accident. To Dexter's horror, the results prove that Hannah had spiked Debra's water with an overdose of Xanax.