Opportune Marriage

"Lisa Farrel was at her wits' end, wondering how she could possibly raise the money to get her beloved brother out of serious trouble, when Brad Norton appeared on the scene, like an answer to a prayer.
Within a few days of their meeting, he had proposed to her--and Lisa agreed, on condition that he provide the money her brother so desperately needed. She had been honest with Brad about her reasons for marrying him, and thought she could expect the same honesty from him. He had implied that she attracted him, and that he was willing to wait for something deeper to develop between them.
How could the marriage work out once Lisa discovered that his motives for marrying her had actually been as calculating as her own?"