Ms. Lippys car, is green.
When Dexter discovers that Trinity is in fact killing four people in a row each time, his dad says it means that 5 days before Lisa Bell was murdered a boy must have been killed in Miami. Dexter searches the missing children archive and comes up with Christopher Kavanaugh who "disappeared late Tuesday". The posting is dated Sunday 27th November 2009. The Lisa Bell murder occurred way back in episode one of season four "Living The Dream", while this episode itself played on Sunday 29th November 2009. So based on this information the current actions of Dexter in this episode would have to be happening many weeks in the viewers actual future. They also are happening on days that do not actually exist since there is 27th November 2009 was actually a Friday. The other two post dates are also wrong: November 4th was actually a Wednesday and November 5th was actually a Thursday, with these dates somehow only two days out while the later post was incorrect by three days.
Debra: I need you to get a DNA panel on this, ASAP.
Masuka: That's your emergency? Project Runway is on.