The Creative Frontiers Accumulator Short Story Competition is free to enter and closes on the 30th of September 2014.
Have a look at the story on the competitions page of their website and then continue the story, adding 300-350 of your own words to the story. Entries must continue the “Riggins” story only.
The winner will receive a £25 Amazon voucher. All entrants will be eligible for a draw at the end of the contest, with a prize of £100.
More here.