On a particular occasion, Caruana described how his soul was transported over five hundred miles to Medjugorje in Bosnia and Herzegovina.
Eventually his faith, and his self-admitted need for conversion, led him to Medjugorje, in present-day Bosnia and Herzegovina, where on Easter Sunday of 1990, he met his wife, Bridget, an American also on a pilgrimage.
He also wrote extensively about the pilgrimage center Medjugorje in the former Yugoslavia.
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He claimed in his scientific publications there had been an estimated 140 killings, 60 people missing and 600 refugees from the pilgrimage village Medjugorje, in Bosnia during the Bosnian War (1992-1995).
On 17 March 2010, the Holy See announced that, at the request of the bishops of Bosnia Herzegovina, it had established a commission, headed by Cardinal Camillo Ruini, to examine the Medjugorje phenomenon.
Craig Lodge, a former hunting lodge in Dalmally, Argyll, Scotland, was run by Calum and Mary Anne MacFarlane-Barrow as a guest house until a pilgrimage to Medjugorje in 1984 gave their lives a new direction.
A 2009 paper by Yale Divinity School student Daniel Klimek details the intricate connection between the Medjugorje apparitions and the writings of Italian mystic Maria Valtorta.