A contested inheritance

She comes from nowhere. Avery has a plan: go unnoticed, work hard to aspire to a better future. Then an eccentric billionaire dies and leaves her almost his entire fortune. And no one, not even Avery, knows why. They had it all. Now she has to move into the mansion she inherited, which is full of secrets and codes, and where the deceased's relatives reside: a family determined with the sole objective of discovering why Avery has inherited all "their" money. Now there is only one rule: whoever wins gets it all. Soon Avery will find herself caught in a deadly game in which the whole family participates. How far will they be able to go to recover their fortune?