In which Ylva Sigefridsdottir, also known as Ylva the Dread, had been an earl since she was a young girl, despite having two brothers, following the death of her mad father and power-hungry stepmother. Hearing of the girl's feared reputation and countless warriors loyal to her, Ragnar Lothbrok decides to propose an alliance between them, leading to her and her men joining them on the journey to England, and in the process, she meets his son, Bjorn Ironside. VIKINGS SEASON TWO THROUGH SEASON FOUR-A BJORN IRONSIDE X OC

In which ten years have passed since the Second Siege of Paris and everything has changed for Ylva and Bjorn Ironside. Upon the sudden arrival of Ragnar Lothbrok, they choose to sail on their journey to the Mediterranean instead of joining the man on his trip to England, which is a decision they will both regret their entire lives. For it changes everything around them and not for the better. VIKINGS SEASON 4B ONWARDS BJORN IRONSIDE X YLVA THE DREAD COMPANION BOOK TO MADNESS SEQUEL TO SHE-WOLF

In which after the numerous losses she was forced to experience, Ylva the Dread begins to lose herself, slowing descending into madness like her brother and father before her. Will she be able to save herself before she's far too gone to be saved? VIKINGS SEASON 6A - 6B

In which Freya Ylvasdottir has been prophecied by the Seer to be destined to betray her mother, Queen Ylva the Dread and Bjorn Ironside, her mother's husband, and no matter what she does to try to avoid her fate, all roads lead back to the betrayal and in the process, she finds herself married to one traitor and in love with another. VIKINGS SEASON 4B ONWARDS COMPANION BOOK TO GREATNESS AND SHE-WOLF