Ten short mysteries featuring Hawkeye Collins and Amy Adams, two twelve-year-old sleuths who solve mysteries using Hawkeye's sketches of important clues. The reader is invited to arrive at their own conclusions before reading the solutions in a mirror.

Previously published: Deephaven, MN : Meadowbrook Press, c1983.

Secret of the long-lost cousin --Case of the disappearing diamonds -- Mystery of the helpful professor -- Case of the daisy dispute -- Case of the bouncing check -- Mystery of the hardware heist -- Case of Lucy's lost lemonade -- Mystery of the missing money -- Case of the bashed boss -- Secret of the ancient treasure. Part 1, The black cave -- Solutions.