Ellen Gray's weekend TV picks: Angie Harmon digs into Philly, 'Battle Creek' goes to dogs

* WHO DO YOU THINK YOU ARE? 10 p.m. Sunday, TLC.

In genealogy series, "Rizzoli & Isles" star Angie Harmon comes to Philadelphia's Free Library, the Historical Society of Pennsylvania and Valley Forge in pursuit of an ancestor who immigrated from Germany as an indentured servant and ended up as a not very happy soldier in George Washington's army.

* NEIGHBORS WITH BENEFITS. 10 p.m. Sunday, A&E.

There's a high ick factor in this new docu-series about swingers, but there's also something mildly comforting about how dull the practices look in what participants refer to as "the lifestyle." Still, I'd like to be a fly on the wall at the community's next PTA meeting.

* BATTLE CREEK. 10 p.m. Sunday, CBS3.

Even police dogs can't escape the rivalry between Battle Creek detective Russ Agnew (Dean Winter) and FBI agent Milt Chamberlain (Josh Duhamel, below). If the maple-syrup murder didn't make it clear that this show, from "Breaking Bad" creator Vince Gilligan and "House" creator David Shore, isn't your father's CBS procedural, this episode should.

* GIRLS. 9 p.m. Sunday, HBO. Lena Dunham's still-polarizing dramedy wraps up its fourth season.

* BLOODLINE. Netflix.

Kyle Chandler ("Friday Night Lights"), Sissy Spacek and Sam Shepard star in Netflix's newest original, a dark family drama from the creators of "Damages."