"Nice work, Derren! But man, we have too man leads -- the bike, the ganngers' leader, and we still haven't visited the clinic ... Do we take them one at a time, or split up?"
Of course, since only two of us seem to be posting at the moment, splitting Derren and Alf up could be a little ridiculous. But I was thinking it could be an IC justification for the others not being involved at the moment; Derren and Alf go down some path, and if we can lure others back they can pick up on another one of them.