Cameron claims he couldn't have killed Agatha because he was at Burning Man. This can not be true because Agatha was killed two days ago and the current date is August 18th. Burning Man takes place every year, at the very end of August, the week before labor day, which is in September.
After Agatha jumps, when the camera pans around the people standing at the scene, you can see Shawn and Gus standing behind the crowd, then the scene cuts to Shawn and Gus driving up to the site, with Gus wearing the same shirt and watch that he was wearing at the previous scene at the site.
When Cameron asks Lucy if the accusations are true, we see the right side of her head in the shot, indicating that she's facing him. However, in the next shot she's looking away and then turns to look at him.
The Spencer's bible, that Gus uses to look up the proverbs clue from Father Westly, is a World English Bible. This is not a bible version recognized by the Catholic Church as being published in accordance with the prescriptions of the Code of Canon Law.