Let's talk about the Hawthorne family first, because they're the whole reason Avery ends up in that Texas mansion. The late billionaire Tobias Hawthorne left his entire fortune to Avery, a total stranger, instead of his own family, which kicks everything off. His grandsons—Grayson, Jameson, Xander, and Nash—are the core puzzle-solvers Avery gets tangled with. Grayson is the stoic, responsible heir-apparent who handles everything with a cold precision that's frankly a bit intimidating. Jameson is his complete opposite: reckless, charming, obsessed with riddles and dares, always pushing Avery toward the next clue. Xander is the quirky youngest brother, a genius inventor type who brings weird science into the mystery. Nash, the oldest, is the quiet, protective one, a former soldier who seems more grounded than the others.
Then there's Avery herself, who's thrust from a life of struggling to survive into this world of extreme wealth and danger. She's sharp and resilient, but I sometimes found her reactions to the brothers' constant mind games a bit frustrating—like, girl, set some boundaries. The family also includes the matriarch, Skye, who is Tobias's daughter and the boys' mother, along with her sister Zara, both of whom are... complicated and not exactly welcoming. A secretary named Oren becomes Avery's bodyguard and a rare source of genuine protection. The series does a decent job making you question everyone's motives, which is the main draw, though the romantic tension between Avery and the Hawthorne brothers can overshadow the actual inheritance puzzle at times.