Todd was previously played by Bruno Langley, whose contract was terminated after he was accused of sexual assault.
The Doctor Foster star shot to fame after playing Karen McDonald in the ITV soap in the early noughties.
He made the decision to address the pandemic so the soap didn't turn into a "parallel fantasy-land".
The shocking scene saw Yazmeen stab her abusive husband in the throat with a broken wine bottle.
He played Ray Langton in the ITV soap between 1966 and 1978.
The actress will be seen on screen from September.
'For Martyn and all those who lost their lives... we stand together.'