Cryptic casebook of Coco Carlomagno and Alberta: the perplexing pineapple. Ursula Dubosarsky and Terry Denton. 2013.

Coco Carlomagno is the well-respected, if somewhat easily startled, Chief of Police in Buenos Aires.

Alberta is his more sensible cousin. Together they crack the cases that confound this puzzling city.

Coco Carlomagno is sure his office hih in the Obelisco is haunted. Every day he sees a floating pineapple and every day he hears a terrible noise. What could it mean?

There’s only one Guinea pig Coco can turn to for help: his logic-loving cousin Alberta. Can they solve the mysteries of the perplexing pineapple?