The killing of Maryam Al-Hawi

Maryam''s apartment explodes, completely charring her under mysterious circumstances, and the accident is definitely planned. Who would kill a meek young engineer who had never been involved in anything before? She left her only friend, Laila, a bag containing an unmarked white card with: a few numbers, a yellow duck, and a piece of writing paper with a person''s name on it. Her friend finds herself facing a very complex puzzle and is forced to place the pieces, one next to the other. To answer the confusing question: Who killed Maryam Al-Hawi?But you will not see the full picture until you put in the "final piece."