When Chloe and Lucifer’s investigation into the murder of a diamond thief points to one of Ella’s brothers as the main suspect, Ella is driven to prove her brother’s innocence…

When Kara’s attempts to help National City don’t go according to plan, she must put aside the doubts that she — and the city’s media — has about her abilities…

A series of indeterminate deaths test the deductive powers of the CSI team, who fear that a public health emergency may be in the offing. Meanwhile, a friendly rivalry over…