-Two short stories which introduce the character of Captain Lacey. Each is a mystery and because they are short stories, the solutions are quickly found.
-The first story, which is that of the title of book, shows how Captain Lacey catches things that others may not. A former Sargent under his command searches him out. This former Sargent was told through Lacey's friend, Grenville, that Lacey is good at finding things and he asks for Lacey's help. The Sargent is engaged to be married to a woman from a wealthy family and, in order to avoid revealing certain indiscretions on the Sargent's part, the Sargent asks Lacey to locate his walking stick which he left in one of several places. He doesn't want it revealed, if the walking stick shows up in one of those places, that he had visited a place he should not have.
-Lacey agrees, but only because of their past relationship, and the former Sargent provides Lacey with a list of several possible places where the walking stick may have been left.
-As Lacey goes to each place, he finds more distasteful things about the former soldier so that, when he finally does locate the walking stick, Lacey's character as a doer of good, and righter of wrongs comes to the fore, and he teaches the Sargent a well deserved lesson.
-There is a second story, which is actually the first Captain Lacey story written by the author. It is his search for the daughter of an acquaintance of his, and it reveals the mindset of those in certain social positions, where they would abandon a young girl from their family if it appears she has taken a wrong turn. Shame, because of a possible marring of their family name, can result in tremendous cruelty. How he determines the young girl's location and, when he finds that she had been severely beaten, how he finds the perpetrator, shows his dogged persistence, and his ability to interpret the clues that are left in the girl's wake.
-A good start to an excellent series.