Why is detailTextLabel not visible?

Or if you are using Interface Builder, change the Style cell property to Subtitle. :)

In order to solve it programmatically:

let cell = UITableViewCell(style: .subtitle, reuseIdentifier: "identifier")

The detailTextLabel is not displayed for cells with the UITableViewCellStyleDefault style. init the UITableViewCell with UITableViewCellStyleSubtitle instead and you should see your detailTextLabel.

cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];