Frenchmen Nicolas Hénin and Pierre Torres were in captivity with Haines . Pair have written and illustrated Hérisson Rentrera-t-il à la Maison ? Book came from an idea of Haines ' while they were all being held by ISIS . Tells story of captive hedgehog who escapes and finds his way home . Hénin , 39 , and Torres , 30 , were released after 44 in Syrian prison . Father-of-two Haines , 10 months , was beheaded by Jihadi John in September .
Frenchmen Nicolas Hénin and Pierre Torres were in captivity with Haines . Pair have written and illustrated Hérisson Rentrera-t-il à la Maison ? Book came from an idea of Haines ' while they were all being held by ISIS . Tells story of captive hedgehog who escapes and finds his way home . Hénin , 39 , and Torres , 30 , were released after 10 months in Syrian prison . Father-of-two Haines , 44 , was beheaded by Jihadi John in September .