How could this happen? Two people buying the same house?

The year is 1951. Her life shattered by the sudden death of her husband, Trina Brown, a black lady with twin teenage daughters from Atlanta, Georgia, seeks a new life in Alaska. She begins working and buys a house at 144 East Chestnut Street in Juneau. She goes there with the help of her friend and mentor, Rose Williams.

Aaron Mueller is a successful Jewish businessman from New York City whose wife dies of lung cancer. Losing all interest in his family business, he sells out and is looking for a new passion in his life. At the suggestion of a friend, he researches Alaska and decides he'll find it there. Through a real estate trade magazine, he buys a house at 144 East Chestnut Street in Juneau and moves there.

How did Janet Green manage a bank scam that caused Trina Brown and Aaron Mueller to buy the same house? Why does the FBI get involved? And how do a black lady from Atlanta and a Jewish businessman from New York City manage to live together and still get along?