The Girl In The Mirror by Rose Carlye

Iris and Summer are identical twins whose bodies mirror each other both outside and in. Their multiple familied father passes away leaving a will that rewards the huge paycheck to the first born child with married parents. This creates a sick race by each family to grab the cash. Summer marries wealth and seems to have it all but Iris watches silently from the sidelines as her own marriage has fallen apart. A last minute plea to sail Summer's yacht from Indonesia home leaves Summer and Iris alone on a sister road trip. When an accident happens (and you knew it would) one sister is left with a 
unique opportunity. Just how far would you go to live the perfect life? What if it wasn't as perfect as you thought? This is a thrill a minute classic devious family scenario for fans of SUCCESSION. Everyone is playing games for a sizable fortune but prepare yourself for a gut punch ending.   4 stars