For the CBS Mornings series, "The State of Spirituality with Lisa Ling," she takes a look at why so many people are converting to Islam behind bars.

Islam is becoming the third-largest faith in U.S. prisons, with thousands of inmates embracing the religion each year. Reports suggest that the structure, discipline, and sense of brotherhood in Islam are key reasons behind this growing trend.

For the latest installment of the "CBS Mornings" series "The State of Spirituality with Lisa Ling," she explores why Islam is rapidly growing behind bars, with tens of thousands of U.S. inmates converting each year.