Dexter Emmy winner John Lithgow is nearing a deal to appear on CBS sitcom How I Met Your Mother.
He will play Neil Patrick Harris’ onscreen dad, Jerome Whitaker, in one episode later this season.
Questions surrounding Barney’s unseen dad have been heard during much of the show’s run. Red herrings he encountered on his quest included everyone from Bob Barker to Ben Vereen (a.k.a. his half-brother’s dad, Sam).