When Henry is looking at the burnt letter, the initials are very clear the 1st time. After the flashback, the 1st initial is nearly gone. While there's not as much visible the 2nd time, the shape of the remainder is shown that it is same letter.
When the reporter is talking to Lucas in the break room, her phone alternates between being in her hands and on the table in between shots.
When Henry confronts Mr. Carlyle about his epilepsy medication, the wide shot shows Henry's right hand behind his back. However, in his close-up - even though we can't see below his shoulders - it's clear from body position and secondary movements that he's gesturing with his right hand.
If Morgan always "returns" alive in water and naked, how does he call his friend/son for clothes? In the first episode, he was arrested.
Henry identifies Gloria Carlyle as "the last living heir of John Arthur Carlyle". Gloria has a living son so by definition could not have been the last living heir.