What was found
FROM THE PILOTS REPORT: ABOUT 2 MINUTES AFTER DEPARTURE TO PICK UP A SCENE FLIGHT, THE CREW REPORTED THAT THEY BELIEVED THAT THEY SMELLED A HOT SMELL OR SMOKE. I DID NOT NOTICE ANYTHING UNUSUAL, HOWEVER, I IMMEDIATELY INITIATED THE PROCEDURE FOR SMOKE IN CABIN AND BEGAN A RETURN TO BASE, WHICH WAS THE NEAREST APPROPRIATE LOCATION TO LAND. AFTER LANDING, I HAD NOT IDENTIFIED THE SOURCE THAT THE CREW SMELLED, SO I COMPLETED A WRITE UP IN THE LOGBOOK AND CONTACTED MAINTENANCE. MAINTENANCE FOUND NOTHING WRONG AND SIGNED AIRCRAFT BACK INTO SERVICE.