Credit: ABC Family

It isn't called Secret Life of the American Teenager for nothing! 

Secrets abound on the dramalicious ABC Family show, and another one comes out in Season 4, Episode 16, "They Gotta Eat."

When Grace calls her mom to come clean about her summer plans, she learns a shocking secret. 

What could it be? Is Kathleen having an affair? Is it about Grace's dad? 

Post your theories on our Facebook page!