A mystery linking Manhattan circa 1991 to eastern Afghanistan in 2012, Blue Hours tells of a life-changing friendship between two memorable heroines. When we first meet Mim, she is a recent college graduate who has disavowed her lower middle class roots to befriend Kyra, a dancer and daughter of privilege, until calamity causes their estrangement. Twenty years later, Kyra has gone missing from her NGO's headquarters in Jalalabad, and Mim--now...