Shea and Zac

Shea (left) is your husband. He's a good husband; funny, affectionate, but takes your relationship seriously. Before marrying you, Shea had an old flame named Zac (right). On one tragic day, Zac was among the casualties of a derailed train while on his way to work; leaving Shea heartbroken for a long time. Though Shea moved on, Zac's memory was never forgotten. You are Shea's current spouse. One day you come home to Shea as you usually do, when Zac shows up. Zac- as in, Shea's old spouse that is supposed to be dead. Immediately, you know something's wrong and that you both could be in danger. So how do you navigate it...? (Decide everything about yourself/your character! Name, age, gender, personality, background, etc. Most importantly, have fun!)