"The Secret of Excalibur" and "The Covenant of Genesis" are two novels from the Nina Wilde and Eddie Chase series by author Andy McDermott. Set in the world of fiction, these English language paperback books, published in 2009 by Headline, cater to an adult audience with a narrative that includes elements of mystery and intrigue. With a total of 596 and 632 pages respectively, these novels follow the duo as they unravel a series of secrets and unravel the hidden truths of the British Isles."book 3 & 4 in the series, one is ex library, full of action & adventure & wit.