Scott Pelley

Pelley out, Mason temporarily in as CBS evening news anchor

CBS' effort to brand itself as the home of hard-edged newscasts has achieved commercial success in the morning, but not so much in the evening — and "CBS Evening News" anchor Scott Pelley paid the price for it with his job.

The network announced Wednesday that Pelley will return full time to "60 Minutes," the flagship newsmagazine where he divided his time in the six years since he replaced Katie Couric as evening news anchor. Twenty-year CBS veteran Anthony Mason will fill in on the evening news until a permanent successor is chosen.

The transition has already been a little messy: CBS had intended to announce it next week, but when workers began...