The envelope jammed in Wren's mailbox wasn't hers. Same street, wrong number: 14 instead of 41, the digits swapped by some tired hand at the sorting office. It was addressed to a woman named Cordelia, in looping handwriting. Inside, a letter began, 'Darling, I know it's been too long, and I owe you the truth.' Wren stood on her steps, holding a stranger's letter, not sure what to do.

Wren knew she shouldn't read more, but the first line had hooked her. She read the whole letter at her kitchen table. It was from someone named Theo, apologizing for leaving without saying goodbye three years ago. There was no return address, just a small drawing of a paper boat at the bottom. Wren felt like she'd stepped into someone else's life.

Wren turned the envelope over and found a faint postmark from a town two hours north. She typed the name into her phone and searched 'Theo paper boats.' To her surprise, a small bookshop popped up, with a folded paper boat as its logo. The owner's name was Theo. Wren grinned. She had a lead.

Wren drove to the bookshop that weekend. Inside, paper boats hung from the ceiling on strings. A gray-haired man at the counter looked up. 'I think I have something of yours,' Wren said, sliding the letter across. Theo's hands shook as he recognized his own writing. 'Where did you get this?' he whispered.

Theo closed the shop early and made Wren tea. He told her everything, about Cordelia, the goodbye he botched, the letters sent into silence. Wren pulled out her phone and helped him track Cordelia to a cottage by the sea. He was too nervous to go alone, so Wren drove him. When Cordelia opened the door, three years melted away, and Theo turned to Wren, eyes wet. 'A wrong address brought me to the right person.'