Arming himself with a revolver and knife, he set out on his self-appointed mission.

She has worked tenaciously ever since on behalf of her self-appointed mission: to improve children's television.

Lamont Cranston had departed on the next stage of his self-appointed mission.

His self-appointed mission was the "undamning" of this data.

I soaked up everything available, which was considerable at a time when classical radio stations and record companies still took their self-appointed missions seriously.

Dead, the detective had arrived to fulfill his self-appointed mission!

Mike's self-appointed mission was to secure the outer flank of the sweep.

I could forget my self-appointed mission to the distant Bikura (are they real?

We believe you're a cosmic agent with a self-appointed mission.

Such a dog, launched upon a self-appointed mission, could prove himself a killer.