The Heir and The Crown are the absolute perfect continuance to the selection series. Since our main character is the selector, we genuinely don't know who she'll pick, even though most people have their suspicions.

Eadlyn is such a brat. She's spoiled to death, although what princess isn't spoiled? She's rude to Josi (Josy? Honestly no idea how the names in this book are spelled since I Audiobooked it). It's clear as day that Josi is jealous of Eadlyn and insecure because she's raised in Eadlyn's shadow, but she's almost literally bullying her. 

Interestingly, Eadlyn thinks that she can fundamentally change the kingdom within days of her becoming Queen without discussing it with anyone beforehand! This is ridiculous, and no way in hell that kingdoms can be run this way. 

The romance in this book is weak. We don't get to see any romantic plot devolving, or her connection to anyone seems natural. Her last choice is cliché, and her second choice is also so ridiculously cliché. It seems as her connections to these guys are sudden and appear out of thin air. 

It was okay, and this story adequately concluded the series, but I don't think I'll ever reread the heir and the crown when/if I reread the selection.