Suspicious stuff from the day the body was found:
At 12:07 PM, Amanda calls Meredith's phone. At 12:08 PM, Amanda calls Filomena and tells her about the blood. She does not tell Filomena about that locked door, or the supposed burglary. Filomena asks her to call Meredith. Amanda does not tell her about the call that she made one minute earlier.
At 12:11, Amanda makes a call to Meredith's Italian phone and a call to her english phone. The calls last three seconds and four seconds, respectively. Long enough to for the phone company to note that a call was made, but way too short to go to voice mail or wait for Meredith to answer. Amanda later said in an email that she called Meredith's Italian phone but that it just rang and rang. Given that the call was only three seconds, this was not true.
Postal police arrive at 12:30 PM. At 12:51 PM and 12:54 PM, Sollecito makes calls to 112 (the Italian version of 9-1-1). That's right. 20 minutes after the police were already there, he called the Italian version of 911 to report that someone had broken into the house and that there was blood.
Amanda would later tell people that Meredith died by the closet. She did die by the closet, right, so no big deal? The problem is that while Meredith died by the closet, the body was moved away from the closet. Amanda knew that Meredith died by the closet before the police even knew.
Amanda also knew that Meredith's throat was cut. She claims to have heard it from "someone" who was at the cottage when Meredith's door was kicked open, but none of the people who were present when the door was kicked open knew that. All they saw of Meredith was a foot. Amanda never gave a name for who told her about the throat, because that person would have been able to refute her claim.