Orphan Black (9pm, BBC America) - The really excellent second season begins with Sarah searching for her missing daughter and suspecting that ruthless pro-clone Rachel is behind the disappearance. Meanwhile, Alison attends the funeral of her fallen friend, Aynsley, which causes Alison to sink into despair.
Also on tonight . . .
A Day Late and a Dollar Short (8pm, Lifetime) - In this Lifetime movie, a mother who learns that her next asthma attack may kill her sets off to mend her dysfunctional family before she leaves this world -- whether they want to be mended or not.
A Lesson in Romance (9pm, Hallmark) - Another movie about a mom, but this one is asthma-free (we think). We do know that she has empty-nest syndrome, so she follows her kids and husband to college so they can grow closer as family. (So apparently instead of being on the verge of death, this mother is simply deranged.)