<Table> Ratings table <Tr> <Th> Season </Th> <Th> Network </Th> <Th> Episodes </Th> <Th> Timeslot </Th> <Th_colspan="2"> Season premiere </Th> <Th_colspan="2"> Season finale </Th> <Th> TV season </Th> <Th> Viewers (in millions) </Th> <Th_colspan="2"> Most watched episode </Th> </Tr> <Tr> <Th> Premiere date </Th> <Th> Viewers (million) </Th> <Th> Finale date </Th> <Th> Viewers (million) </Th> <Th> Title </Th> <Th> Viewers (millions) </Th> </Tr> <Tr> <Td> Season 1 </Td> <Td> ABC Family </Td> <Td> 22 </Td> <Td> Tuesdays 8: 00 pm (first set) Mondays 8: 00 pm (second set) </Td> <Td> June 8, 2010 </Td> <Td> 2.47 </Td> <Td> March 21, 2011 </Td> <Td> 3.64 </Td> <Td> 2010--11 </Td> <Td> 2.87 </Td> <Td> "Moments Later" </Td> <Td> 4.20 </Td> </Tr> <Tr> <Td> Season 2 </Td> <Td> 25 </Td> <Td> June 14, 2011 </Td> <Td> 3.68 </Td> <Td> March 19, 2012 </Td> <Td> 3.69 </Td> <Td> 2011--12 </Td> <Td> 2.68 </Td> <Td> "unmAsked" </Td> <Td> 3.69 </Td> </Tr> <Tr> <Td> Season 3 </Td> <Td> 24 </Td> <Td> Tuesdays 8: 00 p.m. </Td> <Td> June 5, 2012 </Td> <Td> 2.93 </Td> <Td> March 19, 2013 </Td> <Td> 2.87 </Td> <Td> 2012--13 </Td> <Td> 2.59 </Td> <Td> "She's Better Now" </Td> <Td> 3.21 </Td> </Tr> <Tr> <Td> Season 4 </Td> <Td> 24 </Td> <Td> June 11, 2013 </Td> <Td> 2.97 </Td> <Td> March 18, 2014 </Td> <Td> 3.12 </Td> <Td> 2013--14 </Td> <Td> 2.53 </Td> <Td> "Now You See Me, Now You Don't" </Td> <Td> 3.33 </Td> </Tr> <Tr> <Td> Season 5 </Td> <Td> 25 </Td> <Td> June 10, 2014 </Td> <Td> 2.72 </Td> <Td> March 24, 2015 </Td> <Td> 2.65 </Td> <Td> 2014--15 </Td> <Td> 2.01 </Td> <Td> "EscApe From New York" </Td> <Td> 2.72 </Td> </Tr> <Tr> <Td> Season 6 </Td> <Td> ABC Family (2015) Freeform (2016) </Td> <Td> 20 </Td> <Td> June 2, 2015 </Td> <Td> 2.38 </Td> <Td> March 15, 2016 </Td> <Td> 1.19 </Td> <Td> 2015--16 </Td> <Td> 1.72 </Td> <Td> "Game Over, Charles" </Td> <Td> 3.09 </Td> </Tr> <Tr> <Td> Season 7 </Td> <Td> Freeform </Td> <Td> 20 </Td> <Td> June 21, 2016 </Td> <Td> 1.43 </Td> <Td> June 27, 2017 </Td> <Td> 1.41 </Td> <Td> 2016--17 </Td> <Td> 1.11 </Td> <Td> "Tick - Tock, Bitches" </Td> <Td> 1.43 </Td> </Tr> </Table> <Tr> <Th> Season </Th> <Th> Network </Th> <Th> Episodes </Th> <Th> Timeslot </Th> <Th_colspan="2"> Season premiere </Th> <Th_colspan="2"> Season finale </Th> <Th> TV season </Th> <Th> Viewers (in millions) </Th> <Th_colspan="2"> Most watched episode </Th> </Tr> <Tr> <Th> Premiere date </Th> <Th> Viewers (million) </Th> <Th> Finale date </Th> <Th> Viewers (million) </Th> <Th> Title </Th> <Th> Viewers (millions) </Th> </Tr> <Tr> <Td> Season 1 </Td> <Td> ABC Family </Td> <Td> 22 </Td> <Td> Tuesdays 8: 00 pm (first set) Mondays 8: 00 pm (second set) </Td> <Td> June 8, 2010 </Td> <Td> 2.47 </Td> <Td> March 21, 2011 </Td> <Td> 3.64 </Td> <Td> 2010--11 </Td> <Td> 2.87 </Td> <Td> "Moments Later" </Td> <Td> 4.20 </Td> </Tr>

Who plays the role of a in pretty little liars