At the morgue, the girls discover that the murder weapon was a curved blunt edge (like a field hockey stick?). In addition, the attack with the weapon was from behind, as the injuries were in the back of her skull. And, the force of the weapon was so strong it dented Alison's skull. Lastly, her lungs were filled with dirt, meaning she was breathing in dirt when she died, as in, she was buried alive (under the gazebo).
Emily is taken to the hospital after doubling over in pain; Hanna becomes concerned for Caleb's safety; Spencer and Aria search for the coroner's report on Alison's death. #PLL #PrettyLittleLiars