Sydney walks into the CIA offices and asks to speak with the Director in episode 1x01 "Truth Be Told".
Sydney is walking back to her car when she is attacked in episode 1x01 "Truth Be Told".
From episode 2x10 "The Abduction".
Sydney leaves the blood drive truck after talking with Vaughn and heads off to class in episode 1x02 "So It Begins". Francie tells Sydney about her party idea and Sydney needles her about inviting Charlie's nephew just to get a chance to see him in episode 1x05 "Doppelgänger". Francie meets with Charlie thinking he is going to break up with her but he tells her he wants to be a signer in episode 1x06 "Reckoning".
Marcus pulls up outside the university while Sydney prepares for the event in episode 1x08 "Time Will Tell".
Vaughn gives Sydney info on the upcoming mission and tells her to complete it as normal in episode 1x09 "Mea Culpa".
Anna Espinosa and Sydney meet in a stadium to examine the manuscript in episode 1x03 "Parity". Sydney and Anna find themselves having to quickly memorize the code as the briefcase begins to destroy the manuscript in episode 1x04 "A Broken Heart".
Sydney goes to her father's cover job in an attempt to ask him some questions in episode 1x03 "Parity".
Marcus and Sydney attend a party to keep an eye on Dhiren Patel but his drink was drugged before they arrived in episode 1x04 "A Broken Heart".
Marcus and Sydney locate an old colleague Mokhtar who is their local liaison in episode 1x04 "A Broken Heart".
Marcus and Mokhtar watch from overhead while Sydney blends in with the crowd to listen in on Luc Jacqnoud's meeting in episode 1x04 "A Broken Heart".
Sydney and Marcus infiltration the plant and after leaving the facility Sydney watches Marcus use a second detonator to destroy the facility in episode 1x05 "Doppelgänger".
The ambulance turns the corner drives under a elevated bridge in episode 1x05 "Doppelgänger".
Marcus and Sydney hike to the coordinates they found in the clock to where Rambaldi hid something in episode 1x08 "Time Will Tell". Sydney finds Marcus seriously injured after escaping the cave and uses her CIA-supplied radio to call for help in episode 1x09 "Mea Culpa".
Sydney locates Rambaldi's journel buried in a cafe under the mountain only to have Anna Espinosa find her in episode 1x08 "Time Will Tell".
Sydney and Anthony Russek infiltrate a bank in Geneva to recover the account numbers stored in a safe deposit box in episode 1x09 "Mea Culpa".
A group of bank robbers break into the bank as a cover for a money transer in episode 1x09 "Mea Culpa".
Jack is kidnapped from his hotel in Cuba during his mission to eliminate Ineni Hassan in episode 1x10 "Spirit". Jack gets a message to Sydney by blinking morse code and they help each other escape with Ineni Hassan in episode 1x11 "The Confession".