 He constructed a subterranean retreat, perhaps beneath the Grimthorpe dwelling, which afforded them sanctuary.This refuge was betrayed to the President of the North, and on 28 October 1586, a strong band of military was despatched, several justices and Anglican ministers joining them, to make a domiciliary visitation of the Grimthorpe and Ousethorpe houses.Two priests were found in hiding at the former; at the latter Langley himself was seized.