For three years, from 1916-1919 the building continued to provide a temporary refuge for these officers tormented by what they had seen and heard of the horrors of war. In 1919, Craiglockhart closed its doors as a War Hospital and returned to its use as a Hydropathic, catering for the needs of wealthy patrons. Times had changed however and in 1920, still owned by James Bell, the Craiglockhart Hydropathic went into voluntary liquidation. Later that year James Bell sold the building to the Trustees of the Roman Catholic Religious Order - The Society of the Sacred Heart.
