From Finland he was sent back to France where he was put in prison. Weil was certainly in great danger at this time, partly because he was Jewish, partly because he had a sister Simone Weil who was a mystic philosopher and a leading figure in the French Resistance.
Mula sa Finland siya ay ipinadala pabalik sa France kung saan siya ay ilagay sa bilangguan. Weil ay tiyak sa dakilang panganib sa oras na ito, bahagyang dahil siya ay Hudyo, bahagyang dahil siya ay may isang kapatid na babae Simone Weil na noon ay isang mistiko pilosopo at isang nangungunang pigura sa French paglaban.