Undercover Genius: Family Genius Mystery #2

Complex conspiracies to the right, dastardly deaths to the left, and all Ana wants to do is save her family's inheritance.

When her half-sister Patra arrives on the Maximillian mansion doorstep with the news that Patra's father was murdered and the killers are after Patra, Ana is off on another race to protect her eccentric family. Graham, the hunky spy in the attic who holds the mansion ransom, has a stake in this mystery if he wants to prevent Ana and her family from turning his high tech...