Extreme Cheapskates Sunday at 8 p.m., DFH

A mother of five who searches for roadkill. A man who haggles over prices at fast-food restaurants. These are people who have money, by the way, which makes it all pretty gross. There’s even a millionaire who pees in bottles so she doesn’t have to flush her toilet; she also dumpster-dives for food. If you’re in the mood to get grossed out, the TLC series shows up Sunday night on sibling network DFH, which stands for Discovery Fit & Health.

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Prosecuting Casey Anthony 8 p.m., Lifetime

This bland TV movie starring Rob Lowe reminded of the sheer awfulness of Nancy Grace and Jane Velez-Mitchell, HLN hosts who love to throw gasoline on tabloid trials. “Prosecuting Casey Anthony” relies on lots of footage of these two over-the-top figures to tell the story of the trial and how the prosecution lost. If you didn’t know Grace and Velez-Mitchell actually existed, you might think they were invented for the movie.

Downton Abbey Sunday at 9 p.m., Channel 2

Edith has a letter published. And a plot.

Saturday Night Live 11:30 p.m., Channel 7

Loving Jennifer Lawrence right now. America’s not-so-sweetheart.

Ripper Street 9 p.m., BBC America

Ripping.

Matthew Gilbert can be reached at gilbert@globe.com. Follow him on Twitter @MatthewGilbert.