Quote Maria Maria101: It will be horrible if they change the bio-dad back to Nick and not Jack. After all this they are going to make Sharon out of a monster, turn Jack's world upside down, and make Nick a saint after all he did. Even if she changed the test, Nick still lied for 18years. I hope they do the right thing this time and give Jack his daughter.
Maybe Jack is also Faith's father and that is the test Sharin changed.
Yes, Nick lied. So his character will take a big hit. But if he is the father in the end, then the hit won't be so hard or so long. Jack doesn't deserve Summer or any other kid. Nick is a great father and he deserves his daughter back.