What were Mary's neighbors up to?
On Hawaii Five-0 Season 9 Episode 23, McGarrett helped his visiting sister make sense of what the neighbors were up to.
However, the brother and sister found themselves in a deadly situation.
Meanwhile, the Five-0 investigated the murders of a ride-share driver and his passenger.
Elsewhere, the team teased the youngest members of Five-0 when Junior escorted Tani to a wedding.
How did it all play out?
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.