Do you mean about why he (Richard) killed Manny? Richard was suicidal previously. Even if he wasn't he's not afraid of dying. So he has no fear of anything Nucky can do and thus no need to lie.
"When the snows fall and the white winds blow, the lone wolf dies but the pack survives." Winter is Coming Now this is the Law of the Jungle—as old and as true as the sky; And the wolf that shall keep it may prosper, but the wolf that shall break it must die. As the creeper that girdles the tree-trunk, the Law runneth forward and back; For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.
