If it was the Archdeacon’s quiet guardianship of the Grail and the way Sir Giles Tumulty’s black arts ran up against something genuinely holy that thrilled you in War in Heaven, you’ll love how That Hideous Strength pits the saintly community at St. Anne’s (with Ransom and even the awakened Merlin) against the technocratic occult cabal of the N.I.C.E. As in Williams’s novel, sacred reality isn’t metaphorical—it breaks into modern life, confounds conspirators, and transforms the fates of characters like Mark and Jane Studdock.

You enjoyed how the Holy Grail quietly appears in a rural parish and radiates grace amid ordinary people in War in Heaven. In The Great Return, Machen brings the Grail’s mystery to a Welsh village, where a humble fisherman’s visit and whispered miracles unsettle skeptics and kindle awe. It has the same low-key irruption of the numinous into everyday life that the Archdeacon witnesses when he shelters the chalice.

If the hunt around the Grail—the break-ins, the forensic curiosity of Sir Giles, and the clergy’s race to outmaneuver occultists—hooked you in War in Heaven, try Midwinter of the Spirit. Reverend Merrily Watkins, newly appointed as a deliverance minister, is pulled into a murder case tangled with ritual magic and church politics in Hereford. It blends clerical duty, police work, and the supernatural with the same investigative pull and escalating peril.

If you loved how War in Heaven turns a chase for a stolen chalice into a meditation on good and evil—where the Archdeacon’s faith matters as much as outwitting villains—you’ll appreciate The Man Who Was Thursday. Gabriel Syme infiltrates an anarchist council of days in a breakneck pursuit that reveals a symbol-laden, theological undercurrent, culminating in confrontations as enigmatic and allegorical as Williams’s sacramental set pieces.

If the clash between the Archdeacon’s reverence for the Grail and the occult exploitation attempted by figures like Sir Giles Tumulty captivated you in War in Heaven, Williams doubles down in Many Dimensions. Here, the Stone of Suleiman—capable of miracles and peril—draws in profiteers and jurists who would wield it, only to face profound moral and spiritual consequences. It’s the same heady mix of dark ritual, sacred power, and perilous temptation.