Since the description doesn't mention the title of the novel, it could be any novel. It might be a classic like 'Pride and Prejudice' or a modern best - seller. Without more details, it's impossible to determine the exact novel.
I'm not sure specifically what Liam's secret story is as there could be many Liams. It could be a story about a personal achievement he's kept quiet, like secretly writing a book or composing a song that no one else knows about yet.
Well, if that happened, it would be a huge twist. It could cause chaos within the fictional world and force other characters to make difficult choices to deal with the aftermath.
Alpha characters in these novels are often confident. For example, they are not afraid to make the first move in a relationship or take risks. They also tend to be dominant. This doesn't always mean in a controlling way, but they like to lead in the relationship.
Common themes revolve around his insecurities. As a young werewolf, he has a lot of insecurities which are often explored in fanfiction. His place in the pack is another theme. Is he an outcast? Or is he a key member? How he proves himself within the pack is often written about. And the theme of facing danger together with the pack, like fighting against other supernatural threats, is also quite common.
I don't know who specifically created the 'Liam Neeson Bedtime Story'. It could be a fan - made creation, or perhaps it originated from some media outlet or event.