The fourth season continues with Henry stepping into his his fifth marriage with young prutient seductive free-spirited Catherine Howard. However, the newlyweds' honeymoon doesn't last long as the new queen's fidelity is soon under suspicion. Consequently,the sixth and final marriage is about to come, and this time to the currently widowed Catherine Parr. The final season witnesses the down-going in the ageing King's health, his capture of Boulogne - France in an attempt to spread his military power, and the deaths of his past wives has Henry solemnly contemplating his own mortality.