A look into Grisha's memories shows Eren the many secrets his father was hiding, including one which led to his mother's demise.
Why in the world did Zeke
betray us?! He's your son!
!لِمَ غدر بنا زيك بالضّبط؟! إنّه ابنك
Warum hat Zeke uns denunziert?
Pourquoi Sieg nous a balancés ?
C’est ton fils, non ?
Perché Zeke ci ha denunciato?! 
È tuo figlio, no?!
Por que o Zeke nos traiu?
Почему Зик сдал нас охранке?
Он же твой сын!