While I'm unfamiliar with the source material, this class sounds intriguing.

The Laggard would obviously receive bonuses to spot and search. Other abilities could be extensions of range increments for ranged weapons, the Elf secret search racial ability.

The Falsemen could get a bonus to Intimidate and Sense Motive checks, a bonus to saving throws against effects that confound his or her visual sense. Based on what I'm reading in your description, the Falsemen has a "social tough" role you could extend that intimidate bonus to a supernatural ability that forces a save from whomever he or she is giving the stink-eyed scrutiny to, should they wish to prevaricate or withhold facts.