Channel 5 has shed some light on this summer's Big Brother, which has a 'Timebomb' theme.
Emma Willis and Rylan Clark give a hint of what the housemates can expect this year in a 30-second teaser for the new series.
The pair are dressed as spies in a secret lair, where they talk of "time-based disturbances".
"Days will turn into nights, time will stop, rewind and tasks will get turned on their heads," Willis is heard saying.
Show bosses have promised Mad Men-influenced, '60s-style decor for the new house as part of an "upbeat, glamorous, thrilling and mischievous" series.
Big Brother will play with time during tasks and secret missions to create tension in the house, and billed this year's housemates as "eccentric, entertaining and unique".
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Last week it was revealed that Big Brother has a new boss, Denis O'Connor, who is now creative director for the show.
O'Connor has already been the show's executive producer for three years and also worked on the final Channel 4 edition of Big Brother.
