'Blue Bloods' Fans Thrown for a Loop by Secret Reagan Family Member Revelation

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Later, Frank broke the news to the family later that day. Everyone was completely shocked by the news. Erin, Jamie and Danny wondered if this was a scam, but Sean assured them the DNA test had to be accurate. Frank described meeting Joe as "familiar" and talking with his previously-unknown grandson was strange. Sean suggested they invite him to Sunday dinner.

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"Family Secrets" ended up being the season finale because the coronavirus pandemic forced Blue Bloods to end production early. However, the way the episode was written made it feel like a finale. Even Selleck thought so. "It just was one of those things, where we're doing the show and you're going, 'Oh, my God, too bad this isn't the season finale,'" he told Parade before the episode aired. "I'm not kidding. I'm not making this up. I'm not just hyping it. I've seen it and I know it will be one of my favorite Blue Bloods."

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Joe's mother told Frank he did not want him to know about his father's family at first. However, this past week, she finally told him about it. Frank invited Paula and Joe to dinner. She was also relieved to know that Frank also wondered if his son would still be alive if he hadn't pushed him to be a police officer. The meeting did not end well though. After Frank said he would not transfer Joe, Paula stormed out and said she would prefer Frank not contact them again.

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The episode ended with the Reagan family dinner. Sean was delayed because he brought Joe along, despite what Paula said earlier. The episode ended with everyone introducing themselves to Joe.

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