6Chapter 6: The Echo Chamber
19Chapter 19: The Timeline
7Chapter 7: A Function of Panic
20Chapter 20: The Second Timeline
8Chapter 8: The Second Equation
21Chapter 21: The Recalculation
9Chapter 9: Projective Geometry
22Chapter 22: The True Motive
10Chapter 10: The Unseen Force
23Chapter 23: The Poisoned Chalice
11Chapter 11: The Alibi Matrix
24Chapter 24: The New Equation
12Chapter 12: The Cold History
25Chapter 25: The Bowstring
13Chapter 13: The Locked-Room Solution
