Episode #3.4 - S3-E4
Other mistake: Twice in the episode Fidel gets from the computer a fingerprint match for Adam Frost. The date of the sample is February 10th, which not only is inconsistent with the supposed timeline of the episode (the security camera puts the murder on March 7th, and the previous episode was set in the fourth week of March as per the gigolo's appointment schedule). but also differs from Natasha's fingerprint date, February 9th. The murder was discovered in the morning, so the victim's prints have been taken the same day as the suspects'.