Faisal Malick is a Christian ex-Muslim. These conversion narratives are always interesting to me, but he barely mentions his own conversion in this book. That is what I had hoped to find when I procured the book.
What he does focus on is an allegorical or eschatological treatment of certain biblical passages, mostly from Genesis, about Abraham, Isaac, Ishmael and Esau. From these passages he proposes that we are now living at a point in human history where God will bring large numbers of Muslims into the Kingdom of God. In explaining the reality of Islamic terrorism he explains that these Muslims have inherited the spirit of Esau. But not to fear, most Muslims inherit the spirit of Ishmael and God will hear their cry.
But this is not all. Large numbers of Muslims coming into the Church, along with their money (and he explicitly mentions this), will provoke the Jews to jealousy, and they too will (finally) believe in their true Messiah, Jesus of Nazareth.
This sort of treatment of biblical material is quite common in each generation. It is part of regular life, I suppose, to read Scripture and assume that prophetic events are being fulfilled in our days. I personally remained very unconvinced of his approach to Scripture. Though he is right on one point–that today more Muslims are converting to Christianity than at any time since the birth of Islam.