Mad Men - Episode 5.01-5.05 - Official Descriptions By b3rt4 (March 11, 2012, 8:54 am) Mad Men

EPISODE 501/502 – “A Little Kiss” (2-hour premiere)
In the season five opener, we’re welcomed back with a surprise for Don as Pete and Roger butt heads, and Joan clashes with a houseguest.

EPISODE 503 – “Tea Leaves”
As Sterling Cooper Draper Pryce tries to build upon its current business, Peggy is given new responsibility. Don and Harry indulge a client.

EPISODE 504 – “Mystery Date”
Don runs into someone from his past. Joan makes a decision, and Roger gives Peggy extra work.

EPISODE 505 – “Signal 30”
Lane strikes up an interesting friendship. Pete entertains guests.