Nina Stibbe’s “Reasons to Be Cheerful” is so dense with amusing detail that I thought about holding the book upside down to see if any extra funny bits might spill from the creases between the page.

A photograph on the pamphlet extolling the benefits of emigration features women in red swimsuits, skidding on water skis across Sydney Harbor — a jarring contrast to the bleak circumstances of a British couple named Charlotte and Henry in their mold-afflicted, too-small house in Cambridge.

Elizabeth Harris’s debut novel is a political book charming enough to appeal to readers burned out by politics.