WHAT IS HE HIDING FROM HER?   When impoverished Lucy Halbrook arrives at Lord Adversane's estate she knows her assignment is unusual--not only will she act as hostess at his Midsummer's Eve play, she must also pretend to be his fiancée!  What Lucy doesn't know is that Ralph is hiding something dark and dangerous. He must uncover the truth behind his wife's death--and Lucy is the key. She challenges him at every turn and, as each day passes, unlocks a little more of Ralph's guarded heart....