1x8 - Lost Signs

Laure dreams of her mother who asks her to stop looking for her. Laure wakes up, troubled. She goes out to her car - a shadow looms. Laure has just been abducted by... Xavier. Suspecting Xavier, the general has him arrested and frees Laure. Laure returns to the Roger's home and brings back a family photo. At the army base, Xavier is injected with truth serum and roughly questioned. Violent memories return. He utters a name... Alex. Laure comes into the interrogation room and explains: "Xavier is Alexandre Roger, the son of Dr. Roger." Xavier confesses to having seen his mother's murder by soldiers who tried to force his father to stop his research on extraterrestrials. He was only 6.