(n); the expectation or tendency for an individual or group's current situation to get worse, a 'downward spiral'or 'slippery slope'.
"Amy Winehouse is on a tragictory for tragedy... she'll be sleeping in gutters before
you know it."
"Lindsay Lohan's tragictory will lead her to drugs, alcoholism and maybe even prostitution... oh, wait, she's there already. Never mind."