History
Not much is known about Felicity Strode prior to her marrying Henri Ducard but she was an expert assassin for a terrorist organization. While they kept their lives secret from each other they did bear child and Morgan Ducard was born.
When Felicity was tracked down and found by her former organization she was threatened into murdering her husband much to her regret. Although just as she loaded her weapon she was stabbed by her own son who had overheard her phone conversation.