Rhiannon Beaubien

The Great Mental Models: Volume 3 covers essential models from mathematics and systems. In part one, you'll learn mental models from systems, helping you see unexpected connections and avoid costly mistakes. You'll discover how these concepts govern the behaviors and interactions in your life. Part one covers topics such as how to:- Identify the right feedback loops to adjust for behavior change (your own and others')- Leverage bottlenecks to supercharge your innovative capabilities- Scale up businesses and other endeavors without damaging their longevity- Reduce risk and preventing disaster by knowing when to incorporate a margin of safety- Construct reliable algorithms in your mind for predictable success to get the results you want every timeIn part two, you'll learn mental models from mathematics that reveal logical patterns in the world. This isn't your high school math class. Part two covers topics such as how to:- Reap exponential gains by investing in knowledge, relationships, and experiences that compound- Utilize the surprising power of sample sizes to reshape your perspective and open your mind- Embrace randomness to become less predictable and more creative- Identify the fundamental components of systems that lead to failure if neglected, so you can focus your energy where it matters most

Jillian likes her job as a signals intelligence officer intercepting German communications. Even though she works undercover in West Berlin during the height of the Cold War, it is safe, predictable — boring even. All that changes when her lover turns out to be a Cuban spy of interest to the CIA, and her only friend, a Canadian diplomat, shows up on the other side of the Wall with a different identity.Jillian is alone and scared. If her cover is blown her life is in danger, but the intercept she is collecting is too important to just abandon her assignment.So she begins two uneasy alliances. One, with a CIA officer named Quentin, in which her only currency is her relationship with the Cuban, and two, with a British military captain, James, there to report on Jillian's activities to her boss. At first concerned only with her own safety, she learns that her diplomat friend is in serious trouble, and Jillian must decide how much she is willing to risk to save both her friend and herself.She suddenly finds herself thrust into the middle of an intricate web of cover-ups, lies, and espionage. Unable to trust anyone, and completely out of her element, Jillian must use her wits to survive playing a spy game that has no rules.

The sequel to the thrilling espionage novel, Alone Among Spies.Jillian knows that her top secret job saves lives. Nothing is more important than maintaining her cover in West Berlin where every third person has a hidden agenda. But that's getting harder and harder to do. Her dream of staying under the radar for a while is shattered when a mystery man on a decades old quest for vengeance mistakes her for the wrong kind of spy.Now Jillian has to figure out how to get some answers in a city where trust is hard to come by and where all her skills are for a different kind of mission. Forced to trust a Yugoslavian journalist with her own agenda, and getting unexpected help from her old boss, who's in Nicaragua hunting the Cuban who almost destroyed her months earlier, Jillian embarks on a search to uncover Nazi crimes that shouldn't be forgotten.Nothing in the past is ever truly buried, and some people have secrets they will kill to obliterate. Jillian must protect herself as the tentacles of the past wrap around the present, as old terrors intertwine with new realities to create vulnerabilities she could never have anticipated.Set during the Cold War, this fast paced action story will keep you engaged until the very end.

Spying in Cold War Berlin is risky. But for Jillian, it’s about to become treacherous.West Berlin, 1976: Jillian, a deep-cover signals intelligence officer, wakes to find her covert mission on the brink of collapse. Her satellite feed is broken, putting both her career and valuable intelligence operations in peril.She needs help, but her usual sources are Her CIA boyfriend is tangled in a high-stakes mission to extract a Stasi courier and her young daughter from East Germany, and her army comrade is caught up in a case of suspected treason that reaches the top echelons of British power. As Jillian investigates her limited options with a new partner, they uncover a secret so incredible it traps them between the walls of East and West. Now, as the stories hurtle toward a stunning convergence, Jillian and her allies must risk everything to expose truths that could endanger their lives—and tip the precarious balance of power in the Cold War.