Tom Hanks, Steven Spielberg’s frequent collaborator, snags himself a seat on Mr. Spielberg’s bandwagon on Sunday when he turns up as the narrator of “Killing Lincoln,” a docudrama on the National Geographic Channel.

If Mr. Spielberg’s “Lincoln” achieves greatness largely through the detailed performances of Daniel Day-Lewis, Sally Field and others, “Killing Lincoln” also has details to recommend it — historical details, the kind of tidbits that (along with Mr. Hanks’s assured narration) can hold your attention, even though the tale is familiar.

“Killing Lincoln,” based on the book by Bill O’Reilly and Martin Dugard, puts its focus just where the title suggests: on the final days of Lincoln’s life and the pursuit of those behind the assassination. And yes, for anyone who can’t get enough of the 16th president, on Sunday it will be possible to arrange a Lincoln trifecta, seeing “Lincoln,” Salvador Litvak’s new film; “Saving Lincoln” (about the president’s bodyguard); and “Killing Lincoln” in a single day. Happy belated birthday, Abe.