The updated paperback edition of The Heart Has Reasons can be ordered online from a variety of sources, including Amazon, Barnes & Noble, and Indigo.

This edition of The Heart Has Reasons is also available as a Kindle eBook, NOOK eBook, and Apple eBook.

About this updated edition, Mark wrote:

“Since the book's original publication, I have continued to talk with and think about the rescuers and have incorporated some additional information and insights into this new edition. I have also sharpened, tightened, and in some cases, improved the text. Several astute Dutch readers have pointed out minor errors, which I have corrected. Finally, I have added twelve new photographs, and updated the epilogue.”