Jack Cutmore-Scott (Freddy) uses his natural accent of English when playing Olivia' fake boyfriend.
The original "Frasier" also had a reclusive author Frasier was obsessed with getting to speak with as well. In A Crane's Critique (1996), Frasier and Niles wanted to read the reclusive author's first manuscript in decades.
The reclusive Estonian author Valdo Kotnik is a reference to the Waldo character from the "Where's Waldo" book series, since he's so hard for the characters to find.