When Castle and Beckett wake up in bed, handcuffed together, in a locked room with no memory of how they got there, they must piece together the mystery of where they are and why, all while trying to escape. But as the two of them adjust to being shackled together, what's the biggest threat they face... the people who abducted them or each other? Meanwhile, Ryan, Esposito and Gates are left to investigate their disappearance in a case where all is not what it seems.
The bit where Ryan asked if the tiger was "grrrreat" made me laugh out loud :P Really enjoyed this episode, season 4 really is fantastic so far. More drama than comedy when compared to S1,2 and 3, but it's still a VERY watchable balance.