The party will probobly get 4 or 5 days to rest and recover, though since they're chasing a fugative they might get cut down to 2-3.<br/><br/>The first step of the necrotheurge investigation will have two main components:<br/><br/>1. He Sabotaged his own lab and  set a number of undead loose in it, possibly leaving important clues.<br/>2. He hired some sky pirates to fly him to Sharn.<br/><br/>The fastest way to Sharn is to cast plane shift to Syrania, then come out through the manifest zone, although that would require navigating a possibly hostile plane.  The spell would take 3 days from being ordered up to cast, and the party would probobly get to Sharn before the Necrotheurge.<br/><br/>The alternative is to simply hire an airship, but since it's only about half the cost of casting plane shift, and the party will arrive five days after the Necrotheurge, Saithe is going to favor the plane shift.