It starts when it starts
Season 4 won't start until the summer of 2011, but Season 3 will continue on March 28, 2011
spring 2013....
Season 3 is over but season 4 will start January 1st, 2014.
There is no certain date yet, but CW announced that Season 4 will start in the fall of 2010.
In Plain Sight - 2008 A Womb with a View 4-12 is rated/received certificates of: Netherlands:12
In Plain Sight - 2008 Rubble with a Cause 2-4 is rated/received certificates of: USA:TV-PG
In Plain Sight - 2008 Whistle Stop 3-4 is rated/received certificates of: USA:TV-PG (V)
In Plain Sight - 2008 Second Crime Around 4-5 is rated/received certificates of: Netherlands:12
In Plain Sight - 2008 I'm a Liver Not a Fighter 4-7 is rated/received certificates of: Netherlands:12
In Plain Sight - 2008 Kumar vs Kumar 4-8 is rated/received certificates of: Netherlands:12
In Plain Sight - 2008 Love in the Time of Colorado 4-3 is rated/received certificates of: Netherlands:12
In Plain Sight - 2008 The Art of the Steal 4-1 is rated/received certificates of: Netherlands:12 USA:TV-14
Las Vegas - 2003 Died in Plain Sight 4-2 is rated/received certificates of: Argentina:13
In Plain Sight - 2008 Crazy Like a Witness 4-2 is rated/received certificates of: Netherlands:12
In Plain Sight - 2008 The Rolling Stones 4-9 is rated/received certificates of: Netherlands:12 USA:TV-PG (LV)
In Plain Sight - 2008 Provo-Cation 4-11 is rated/received certificates of: Netherlands:12 USA:TV-PG (V)