That"s what Mark Filkins has always believed. But it seems as if he"s also gotten a lot he hasn"t asked for, like feeling that he"s a slightly faded copy of his twin brother, or his parents" plan that both boys will grow up to be preachers.When he meets Dr. Colin Hendrick, a Nobel Prize-winning scientist whose research Mark"s family disapproves of, Mark realizes that he can -- and should -- make choices for himself. But when Colin reveals a terrible secret, Mark knows the time has come to ask for the most important thing of all...and put his own faith on the line.