Katherine Howard, executed in 1542 for adultery and treason, has long polarised opinion - portrayed either as a promiscuous good-time-girl or an abused young woman.

Prof. Suzannah Lipscomb investigates the truth behind Henry VIII's fifth wife.

In this second episode, historian Gareth Russell explains how, on the Royal Progress in 1541, Katherine began a dangerous flirtation with courtier Thomas Culpeper, aided by her lady-in-waiting Lady Rochford. It would prove her undoing.

When Henry VIII, who had believed Katherine a virgin at marriage, was alerted to her pre-marital past, he ordered an immediate investigation. Soon, the whole truth would emerge and Katherine, Culpeper and those close to the Queen would find themselves in grave danger.

Suzannah sifts through trial papers and correspondence between the Queen and Culpeper, later used as evidence to condemn them both to death.