Sun, sand, and coconut water straight from the tap… The Whitmores are back in the tropics, celebrating Sebastian and Dylan’s nuptials. Leila thought she left all the drama on the mainland, but when the sun goes down and the temperature rises, all bets are off… For Richer is the fifth installment in The Billionaire’s Vow series. The Billionaire’s Vow Series To Have (The Billionaire’s Vow, #1) To Hold (The Billionaire’s Vow, #2) For Better (The Billionaire’s Vow, #3) For Worse (The Billionaire’s Vow, #4) For Richer (The Billionaire’s Vow, #5) For Poorer (The Billionaire’s Vow, $6) To Love (The Billionaire’s Vow, #7) To Cherish (The Billionaire’s Vow, #8) Til Death (The Billionaire’s Vow, #9)