[Sherlock looks a touch worried. He's blaming the cocaine for the fact that he can't control his emotions as well as he'd like.]

You were all brainwashed too - interesting. And how do we know you're not still in such a state and therefore lying to us?

You say "when Mayfield goes, we all go." Does that mean we die, or get... [He takes a gasped breath at the pain.]... get sent back?

If we get sent back, why should we 'take the fight' anywhere? Unless we die and are stuck here, what's our motivation for helping you?