It's the samurai sword one, where there's a guy in the suit of armor.
Such good Gil/Sara.
And where there's Gil/Sara, there's usually Warrick/Catherine. [Or Warrick/Nick...but that's a different story.]
In this case, Warrick and Catherine are hunting the killer of a girl who had her neck bitten and blood drained, a la vampires. Sweet.
*happy sigh*