Don’t get me wrong, I love “”Lost.”” But every once in a while, I wish I could watch a good show with flashbacks, alternate realities, and scientific experimentation without adding to the wrinkles on my forehead. Luckily for me, J.J. Abrams created another show in 2008 called “”Fringe,”” which shares many qualities with “”Lost,”” besides the polar bears, islands and an overabundance of characters.

“”Fringe”” returned last night to continue the second half of its second season. When we last saw FBI Agent Olivia Dunham, she had just learned to use mental powers that allowed her to recognize objects in her reality that had been brought from an alternate reality. In the final moments of the fall finale, she realized that her “”partner,”” Peter, was actually from the alternate reality, a fact unknown to him. Cue the dramatic cut to black.

In this episode, viewers finally got the answers that they had been waiting for during the long hiatus. Flashing back to Peter’s youth, we see his father, mad scientist Walter, attempting to save Peter from an incurable disease. Walter has the ability to see into the other dimension to his own counterpart, a Walter who possesses far more advanced technology. After this reality’s Peter dies of illness, the other Walter unknowingly finds the cure for Peter’s disease while this reality’s Walter watches through his dimensional window.

This is getting confusing.

Basically, this reality’s Walter ends up jumping into the other reality to save the other Peter, who has not yet died. He can’t bear to give up his son for a second time. And that, my friends, is the story of Peter’s origins. Whew.

Overall, the episode managed to be heartwarming and eerie all at the same time. If you’re a fan of the show and you missed it, catch up at Hulu.com.

Score: B+