Upon the return of James I to Scotland he lost his position as Regent, and during the parliament of March 1424 Murdoch, with Lord Alexander Stewart, his younger son, were suddenly arrested and immediately afterwards twenty six of the principal nobles and barons shared the same fate. Albany was first confined in the castle at St. Andrews and afterwards transferred to Caerlaverock Castle. His wife was found in the fortified palace of Doune, their favourite residence, and committed to Tantallon Castle. Walter, the eldest son of Albany, had already been shut up in the strong castle of The Bass, belonging to Sir Robert de Lauder, a firm friend of the king. Walter was tried in Stirling Castle on May 24, 1424, in the presence of the king. A hurried affair it only took that day for a jury of nobles to find him guilty of treason and he was executed.[1]
Albany and his son Alexander were tried before the same jury the following day, declared traitors and publicly executed on Heading Hill before Stirling Castle.[2] Several other members of his family and close associates were also purges, some sharing the same fate. He was attainted and all of his peerage titles were forfeited.