The crusader Robert de Clari, in his Chronicle of the fourth crusade set in Constantinople, tells of the exhibition and the elevation of Jesus’ sepulchral cloth that took place every Friday in the church of Blachernae. There is no mention of this fact in any other source, and it has been interpreted in various ways. Some state that this cloth is the Holy Shroud now kept in Turin. Others argue in favour of Edessa’s Mandylion.  A third lot claims that Robert would have described a Byzantine liturgical object, the Epitaphios. The analysis of several sources related to the liturgical cult of the church of Blachernae – herein featured and translated – suggests that Robert’s account is quite a confused description of the famous miracle that occurred every Friday in that church: the so-called “habitual miracle”, that consisted in the prodigious elevation of a cloth before an icon of the Virgin.