Like a fine wine, Rick Castle only gets better with age. However, the mystery writer's exact age remains a mystery to us.
While we have a rough idea about his female counterpart, Detective Kate Beckett — she was 19 years old when her mother died in January 1999, and considering she was born on Nov. 17, this would likely make her 32 right now — we don't have as much hard data about Rick.
It's our hunch that Richard is likely in his late 30s or early 40s. Just think about it — he's got an 18-year-old daughter plus a total of 26 bestselling novels under his belt.
Today, Terri Miller confirmed that we don't know how many years Rick has graced the earth with his ruggedly handsome good looks and wit. "We like to keep him 'ageless' like a man of the ages," she wrote to a curious fan. "He's old enough to have a daughter going to college though."
What's your best guest, Castle experts? Is Rick in his late 30s, or has he surpassed the big 4-0? Tell us your theories below.