After telling us about her klepto tendencies, Libby looks over a book about the crime written by a former reporter named Barb Eichel.
It's like In Cold Blood but without the talent.
Libby wants to call Lyle Wirth—but not without having some more evidence that Ben is guilty. So she calls Barb instead.
Barb answers, and when Libby mentions Ben, Barb says, "I've written him several letters of apology. […] I just don't know how many times I can say I'm sorry for that damn, damn book" (5.17). This isn't going as planned.
Libby heads over to Barb's, anyway, to have sandwiches and talk about what was behind the killings.
Since she wrote the book, Barb doesn't believe Ben did it. She's skeptical of Libby's testimony, since Libby was "clearly coached" (5.35), and she doesn't believe Runner's alibi, either.
Barb thinks it would be a big help if Libby recanted her testimony.
Libby doesn't have plans to do that, but she does steal a blue paperweight before she leaves.