Secrets & Lies (Australian TV series) 2014
www.imdb.com/title/tt3103340/?ref_=tt_ov_srs
Main
Martin Henderson as Ben Gundelach
Diana Glenn as Christy Gundelach
Adrienne Pickering as Jess Murnane
Plot
The series follows the story of a family man Ben, who finds the body of a young boy and quickly becomes the prime suspect in his mu..er. It emerges fairly early that the boy was his son from an extra-marital affair which is not quite over; the weapon used was an up-market torch (US:flashlight) identical to one he owns but can no longer locate. He cannot account for his movements, his wife Christy, has good reason to be suspicious of him...
sendvid.com/xihhnrs2
The cuckolded wife and husband know about their affair, but after the death of their offspring, Ben and Jess will reunite and continue their affair.
Ben's wife Christy, also starts seeing someone, but the story goes nowhere as the series ends at episode 6 and there is no season 2.
tubitv.com/series/3968/secrets-lies
This is unrelated, but Martin Henderson starred in a really good movie called Torque, If you're a fan of 2000s movies with rock music and ridiculous stunts. the movie is worth watching: www.imdb.com/title/tt0329691/