When you only need a one-way ticket...

Do we have the right to end our lives if life itself becomes unbearable, or when we enter the late stages of painful, terminal illness? The questions, debated for centuries, have only grown more pressing in recent years as medical technology has allowed us to live longer lives, and several U.S. states have legalized physician-assisted suicide. Academy Award-winning filmmaker John Zaritsky offers a revealing look at a couple facing the most difficult decision of their lives -- and lets us see for ourselves as one Chicago native makes the trip to Switzerland for what will become the last day of his life...FRONTLINE ...9pm