Mary McDonnell will star in 'Major Crimes,' a new spinoff from TNT's wildly successful police drama 'The Closer.' Can we get a "frak yeah," 'Battlestar Galactica' fans?

'Major Crimes' will launch after 'The Closer' wraps its final season with 15 episodes in 2011 and six during the summer of 2012, the network announced this morning. TNT also introduced several new projects, such as 'The TNT Tuesday Night Mystery' series, at its Upfront presentation.

'The TNT Tuesday Night Mystery' -- a working title -- will showcase six crime dramas, including both true crime and fiction mysteries. As part of the new movie block, TNT is working on an adaptation of Scott Turow's novel 'Innocent,' Richard North Patterson's 'Silent Witness,' Sandra Brown's 'Ricochet,' Lisa Gardner's 'Hide,' 'April Smith's 'Good Morning, Killer' and Mary and Carol Higgins Clark's 'Deck the Halls.'