Revealing mistake: In the sequence with Zeus and Apollo attacking the intruders, the padding of the jackets' arms they are sinking their teeth into is very noticeable. (00:32:15)
Revealing mistake: Magnum runs at the beginning of the episode on the beach. In the shots from distance the beach is immaculate and even, while in the closer angles, you can pick up in the sand in the background the tracks left by the camera following the actors. (00:00:35)
The Cat Who Cried Wolf - S1-E7
Revealing mistake: Magnum does a typical movie internet search; he types stuff on the keyboard and pages on Bing he supposedly types the search terms in change without him even finishing to type or typing new words. Moreover, the address bar is stuck on "/search?" without any of the search terms appearing there. (00:04:25)
