<Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> U.S. viewers (millions) </Th> </Tr> <Tr> <Th> 21 </Th> <Td> </Td> <Td> "Troubled Hearts" </Td> <Td> Martin Wood </Td> <Td> Derek Thompson </Td> <Td> February 21, 2016 (2016 - 02 - 21) </Td> <Td> 1.70 </Td> </Tr> <Tr> <Td_colspan="7"> Elizabeth surprises Jack with a home of her own as Abigail learns of Gowen's latest greedy scheme and Frank's past quickly closes in on him . </Td> </Tr> <Tr> <Th> 22 </Th> <Td> </Td> <Td> "A Time to Speak" </Td> <Td> Martin Wood </Td> <Td> Richard Manning </Td> <Td> February 28, 2016 (2016 - 02 - 28) </Td> <Td> 1.74 </Td> </Tr>

When calls the heart season 4 episode guide