520

Buck, innocent, is arrested on a murder charge *
buck could prove an alibi and win freedom of a murder charge, but only by involving Holly, another man’ s spouse **
buck’s obligation to save himself, is opposed by an obligation to protect Holly, another man's spouse ***
(520
371 449Exchange Buck & Evan 537
535 Switch Buck to Peter Switch Evan to Buck 1204 Switch Mary to Holly 
1151 Switch Mary to Holly