While the actors of Outlanderall deserve a lot of praise for the way they have brought their characters to life, one person who has only just begun to get credit is Tobias Menzies. Although it is his portrayal as the villainous Black Jack Randall is one of his most defining roles, not a lot of people pay attention to the emotional and raw performance he gave as Frank Randall.
As a result of this, not many people pay attention to the little details around Frank or the easter eggs the showrunners have hidden to pay homage to the character. It's a shame really since they can help fans get a better insight into Frank's personality or his motives. It'll definitely be worth taking another look if some fans are going to be rewatching some of Outlander's best episodes again.