<P> Both Henry's and Frank's wives are deceased . Erin is divorced and has one college student daughter, Nicky, who lives with her . Danny is a widower with two sons named Jack and Sean; he was married to Linda, a nurse who was killed offscreen between seasons 7 and 8 . Jamie is unmarried, though romantic feelings develop between him and his current partner, Eddie Janko; they acknowledge their mutual attraction during season 7 and get engaged at the end of season 8 . </P> <P> A running plot feature of the show entails Sunday dinner around the table in Frank Reagan's Bay Ridge home at 8070 Harbor View Terrace . Four generations gather here to eat and discuss their week, and the rule is that no one can take a first bite before every last family member is present and seated, and grace is said . Discussion of the week's events then ensues, often including the adults' current work cases, and controversies therefrom are often discussed and hashed out by the entire family . The grandchildren have questions which adults answer sometimes to humor them, sometimes to give their viewpoints . At times the dialogue becomes heated and emotionally charged, but the family always remains loving and united in spite of any differences they encounter . The Sunday dinner has been a Reagan family tradition for more than a century, and is well known to their friends and neighbors . </P> <Table> <Tr> <Th> Actor </Th> <Th> Character </Th> <Th_colspan="9"> Seasons </Th> </Tr> <Tr> <Th> </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> 5 </Th> <Th> 6 </Th> <Th> 7 </Th> <Th> 8 </Th> <Th> 9 </Th> </Tr> <Tr> <Td> Donnie Wahlberg </Td> <Td> Detective Daniel "Danny" Reagan </Td> <Td_colspan="9"> Main </Td> </Tr> <Tr> <Td> Bridget Moynahan </Td> <Td> ADA Erin Reagan </Td> <Td_colspan="9"> Main </Td> </Tr> <Tr> <Td> Will Estes </Td> <Td> Sergeant Jamison "Jamie" Reagan </Td> <Td_colspan="9"> Main </Td> </Tr> <Tr> <Td> Len Cariou </Td> <Td> Commissioner (ret .) Henry Reagan </Td> <Td_colspan="9"> Main </Td> </Tr> <Tr> <Td> Tom Selleck </Td> <Td> Commissioner Francis "Frank" Xavier Reagan </Td> <Td_colspan="9"> Main </Td> </Tr> <Tr> <Td> Amy Carlson </Td> <Td> Linda Reagan </Td> <Td> Recurring </Td> <Td_colspan="3"> Also starring </Td> <Td_colspan="3"> Main </Td> <Td_colspan="2"> </Td> </Tr> <Tr> <Td> Sami Gayle </Td> <Td> Nicole "Nicky" Reagan - Boyle </Td> <Td> Recurring </Td> <Td_colspan="3"> Also starring </Td> <Td_colspan="5"> Main </Td> </Tr> <Tr> <Td> Jennifer Esposito </Td> <Td> Detective Jackie Curatola </Td> <Td_colspan="3"> Also starring </Td> <Td_colspan="6"> </Td> </Tr> <Tr> <Td> Marisa Ramirez </Td> <Td> Detective Maria Baez </Td> <Td_colspan="2"> </Td> <Td> Recurring </Td> <Td_colspan="6"> Also starring </Td> </Tr> <Tr> <Td> Vanessa Ray </Td> <Td> Officer Edit "Eddie" Janko </Td> <Td_colspan="3"> </Td> <Td> Recurring </Td> <Td_colspan="5"> Also starring </Td> </Tr> </Table> <Tr> <Th> Actor </Th> <Th> Character </Th> <Th_colspan="9"> Seasons </Th> </Tr>

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